Mathematics Quiz 20

The ratio of the prices of three articles X, Y and Z is 8 : 5 : 3. If the prices of X , Y and Z are increased by 25%, 20% and 33 1/3% respectively, then what would be the ratio of the new prices of X, Y and Z?

Find the one which does not belong to that group ?

How many shares of market value Rs. 25 each can be purchased for Rs. 12750, brokerage being 2% ?

A sum of money becomes 7?5 of itself in 4 years at a certain rate of simple interest. The rate per annum is :

The parameter of a square is equal to the perimeter of a rectangle of length 16 cm and breadth 14 cm. Find the circumference of a semicircle whose diameter is equal to the side of the square. (Round off your answer to two decimal places)?

Find the one which does not belong to that group ?

[3/7 of {21 * (33.33% of (27 + 3) ? 5) ? 7} ? 8] = _______?

The wheels revolve round a common horizontal axis. They make 15, 20 and 48 revolutions in a minute respectively. Starting with a certain point on the circumference down wards. After what interval of time will they come together in the same position?

A man saves 20% of his monthly salary. If an account of dearness of things he is to increase his monthly expenses by 20%, he is only able to save Rs. 200 per month. What is his monthly salary?

By selling 150 mangoes, a fruit-seller gains the selling price of 30 mangoes. Find the gain percent?

The angle of elevation of the sun, when the length of the shadow of a tree is ?3 times the height of the tree, is :________?

If a man lost 4% by selling oranges at the rate of 12 a rupee at how many a rupee must he sell them to gain 44%?

Find the area of circle whose radius is 7m?

Find the length of the wire required to go 15 times round a square field containing 69696 m2.

Find the one which does not belong to that group ?

Who is known as the Father of Geometry?

An express train travelled at an average speed of 100 km / hr, stopping for 3 minutes after every 75 km. How long did it take to reach its destination 600 km from the starting point ?

If the price of gold increases by 50%, find by how much the quantity of ornaments must be reduced, so that the expenditure may remain the same as before?

A and B starts a business with Rs.8000 each, and after 4 months, B withdraws half of his capital . How should they share the profits at the end of the 18 months?

A shopkeeper marks his goods 20% above cost price, but allows 30% discount for cash payment. His net loss is ?

There are 21 poles with a constant distance between each pole. A car takes 30 seconds to reach the 16th pole. How long does it take to reach the last pole?

The least number which should be added to 2497 so that the sum is exactly divisible by 5, 6, 4 and 3 is:

If in a game of 80, P can give 16 points to Q and R can give 20 points to P, then in a game of 150, how many points can R give to Q?

An amount of 5,000 is invested at a fixed rate of 8 per cent per annum. What amount will be the value of the investment in five years time, if the interest is compounded every six months?

A room is 6 meters 24 centimeters in length and 4 meters 32 centimeters in width. Find the least number of square tiles of equal size required to cover the entire floor of the room?

The spherical ball of lead 3 cm in diameter is melted and recast into 3 spherical balls. The diameters of two of these are 1 ? cm and 2 cm respectively. The diameter of third ball is?

32% of 425 ? ?% of 250 = 36

Using all the letters of the word ?THURSDAY?, how many different words can be formed?

A man invested Rs. 14,400 in Rs 100 shares of a company at 20% premium. If the company declares 5% dividend at the end of the year, then how much does he get ?

A man purchased a cow for Rs. 3000 and sold it the same day for Rs. 3600, allowing the buyer a credit of 2 years. If the rate of interest be 10% per annum, then the man has a gain of:

A delegation of 5 members has to be formed from 3 ladies and 5 gentlemen. In how many ways the delegation can be formed, if 2 particular ladies are always included in the delegation?

The difference between compound interest and simple interest at the same rate on Rs 5000 for 2 years is Rs 72. The rate of interest per annum is:___________?

In a hostel there were 100 students. To accommodate 20 more students the average is decreased by rupees 5. But total expenditure increased by Rs.400. Find the total expenditure of the hostel now?

A man can row upstream at 25 kmph and downstream at 35 kmph, and then find the speed of the man in still water?

A sum was put a simple interest at a certain rate for 2 years. Had it been put at 4% higher rate, it would have fetched Rs. 60 more. The sum is:________?

The average of first five multiples of 3 is____________?

A group of 10 representatives is to be selected out of 12 seniors and 10 juniors. In how many different ways can the group be selected if it should have at least one senior?

A typist uses a paper 30cm x 15cm.He leaves a margin at 2.5cm at the top and the bottom and 12.5cm on either side. What percentage of paper area is approximately available for typing

The area of a parallelogram is 128sq m and its altitude is twice the corresponding base. Then the length of the base is_________?

The average of the marks of 12 students in a class is 36. If the marks of each student are doubled, find the new average?

Four car rental agencies A, B, C and D rented a plot for parking their cars during the night. A parked 15 cars for 12 days, B parked 12 cars for 20 days, C parked 18 cars for 18 days and D parked 16 cars for 15 days. If A paid Rs. 1125 as rent for parking his cars, what is the total rent paid by all the four agencies?

A invested some money in 10% stock at 96. If B wants to invest in an equally good 12% stock, he must purchase a stock worth of__________?

The base of a right triangle is 8 and hypotenuse is 10. Its area is________?

If two pipes function together, the cistern will be filled in 6 hrs. One pipe fills the cistern 5 hrs. faster than the other. How many hours it take the second pipe to fill the cistern?

The average monthly income of P and Q is Rs. 5050. The average monthly income of Q and R is 6250 and the average monthly income of P and R is Rs. 5200. The monthly income of P is____________?

The number obtained by interchanging the two digits of a two-digit number is less than the original number by 45. If the sum of the two digits of the number so obtained is 13, then what is the original number?

The area of largest triangle that can be inscribed in a semicircle of radius R cm is__________?

A and B working separately can do a piece of work in 9 and 12 days respectively. If they work for a day alternately. If A begins first, in how many days the work will be completed ?

If the rate of interest be 4% per annum for first year 5% per annum for the second year and 6% per annum from the third year then the compound interest of Rs 10000 for 3 years will be_________?

A room is 15m long, 4m broad and 3m height. Find the cost of white washing its four walls at 50p per m2??