How many for a rupee must he sell to gain 20%?

A vendor bought toffees at 6 for a rupee. How many for a rupee must he sell to gain 20%?
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What is Anand’s present age in years?

Present ages of Sameer and Anand are in the ratio of 5 : 4 respectively. Three years hence, the ratio of their ages will become 11 : 9 respectively....
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What is the age of the youngest child?

The sum of ages of 5 children born at the intervals of 3 years each is 50 years. What is the age of the youngest child?
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what is the width of the road?

A rectangular park 60 m long and 40 m wide has two concrete crossroads running in the middle of the park and rest of the park has been used...
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Batman Score

A batsman scored 110 runs which included 3 boundaries and 8 sixes. What percent of his total score did he make by running between the wickets?
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contest find the largest

which one is bigger? (a) 7/11 (b) 8/12 (c) 9/13
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Simplify:

sin^-1(sqrt{2}/2)+ cos^-1(1/sqrt{2})+ tan^-1(1)
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Find the Seven Numbers

There are seven numbers, A, B, C, D, E, F, and G. When all these numbers except A are added together, 116 is obtained. When all these numbers except...
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Zener Diodes!

How is Zener diods different than normal diods?
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A person was asked to toss a coin ten times. He did first two toss and get head both the times. What is the probability that he get head...
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Type here
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Multiple choice

Which of the following cannot be an integer if the integer k is a multiple of 12 and a multiple of 9. (a) K/3 (b) K/4 (c) K/10 (d)...
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