If 75 men can complete a piece of work in 20 days.  How much longer will it take to complete the work by 50 men? 

Solution

A student divided a number by 2/3 when he required to multiply it by 3/2. Calculate the percentage of error in the result.

Solution 

A software engineer has the capability of thinking 100 lines of code in five minutes and can type 100 lines of code in 10 minutes. He takes a break for five minutes after every ten minutes. How many lines of codes will he complete typing after an hour?
 

Solution

A tennis marker is trying to put together a team of four players for a tennis tournament out of seven available. Males - a, b and c. Females – m, n, o and p. All players are of equal ability and there must be at least two males in the team. For a team of four, all players must be able to play with each other under the following restrictions:
b should not play with m,
c should not play with p, and
a should not play with o.
Which of the following statements must be false?
1. b and p cannot be selected together
2. c and o cannot be selected together
3. c and n cannot be selected together.

Solution

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