How many times are the hands of a clock at right angle in a day?

The population of town increased from 1,75,000 to 2,62,500 in a decade. The average percentage increase of the...

The difference of two number is 1365. On dividing the larger number by the smaller, we get 6 as quotient and t...

A and B started a partership business investing some amount in the ratio of 3:5. C joined them after six month...

In a business A and C invested amounts in the ratio 2 : 1 whereas A and B invested amounts in the ratio 3 : 2...

The average age of a group of 15 employees is 24 years. If 5 more employees join the group, the average age in...

A person travels a certain distance at 3 km / hr and reaches 15 min late. If he travels at 4 km / hr, he reach...