If sum of two numbers be a and their product be b, then the sum of their reciprocals is
In a camp of 160 students provisions are available for 10 days. If 40 more students join the camp, how long will be provision last?
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There taps A, B, C can fill an overhead tank in 4, 6 and 12 hours respectively. How long would be three taps take to fill the tank if all of them are opened together?
Discount on a pair of shoes marked at Rs. 475 and discounted at 15%, is
The cost price of an article is Rs. 100. A discount series of 5%, 10% successively reduces the price of a article by
A grinder was marked at Rs. 3,600. After given a discount of 10% the dealer made a profit of 8%. Calculate the cost price.
The average of 8 numbers is 27. If each of the numbers is multiplied by 8, find the average of new set of numbers.
If the profit on sale price be 20%, the percentage of profit on cost price is
A container containing 400 litres of oil lost 8% by leakage. Oil left on the container is
In an election, three candidates contested. The first candidate got 40% votes and the second got 36% votes. If total number of votes polled were 36000, find the number of votes got by the 3rd candidate.
A train, 120 m long, takes 6 seconds to pass a telegraph post; the speed of train is
Atrain travelled at a speed of 35 km/hr for the first 10 minutes and at a speed of 20 km/hr for the next 5 minutes. The average speed of the train for the total 15 minutes is
If 40% of of a number is 48, then what is 1% of the same number?
A train 50 metre long passes a platform 100 metre long in 10 sec. The speed of the train in km/hr is
Rs. 730 were divided among A, B, C in such a way that if A gets Rs. 3, then B gets Rs. 4 and if B gets Rs. 3.50 then C gets Rs. 3. The share of B exceeds that of C by
Mahesh earned a profit of 20% by selling 60 apples at the rate of Rs. 51 for 6 apples. Then the total cost, at which the apples were bought is
In a prep school, the average weight of 30 girls in a class among 50 students is 16 kg and that of the remaining students is 15.5 kg. What is the average weight of all the students in the class?
A boy found that the average of 20 numbers is 35 when he writes a number ‘61’ instead of ‘16’. The correct average of 20 numbers is