ISRO Junior Personal Assistant 2010 Paper-II

Sound travels at 330m/sec. How many kms away is a thundercloud when its sound follows the flash after 10 secs?

A walks at a uniform rate of 4 km an hour and 4 hours after his start, B bicycles after him at the uniform rate of 10 km an hour. How far from the starting point will B catch A?

Two guns are fired from the same place at an interval of 6 minutes. A person approaching the place observes that 5 minutes 52 seconds have elapsed between the hearing of the sound of the two guns. If the velocity of the sound is 330 m/sec, the man was approaching that place at what speed?

A person has to make a journey of 72 km. He rides a cycle at 12 km/hr. After going a certain distance the cycle is punctured and he walks the remaining distance at 4 1/2 km/hr. Find where the cycle is punctured if the total time for the journey is 81/2 hours.

A shopkeeper advertises for selling cloth at 4% loss. However by using a false metre scale he actually gains 25%. What is the actual length of the scale?

The marked price of a shirt and trousers are in the ratio of 1:2. The shopkeeper gives 40% discount on the shirt. If the total discount on the set of the shirt and trousers is 30%, the discount offered on the trousers is:

A contractor undertakes to dig a canal 12 km long in 350 days and employs 45 men. He finds after 200 days of working that only 4 1/2 km of canal have been completed. How many extra men must be employed to finish the work in time?

The sales of a business in 1987 were 30% less than sales in 1986. By what percent must the sales in 1988 be increased to bring to the level of 1986?

Suresh has some cows and hens. If the total number of heads be 48 and that of legs be 140, then find the number of hens?

To a certain number 7 is added. The sum is multiplied by 5, the product is divided by 9 and 3 is subtracted from the quotient. If the remainder is 12, whatis the number?