ISRO Junior Personal Assistant 2008 Paper-II

The number of students in each section of a school is 24. After admitting new students, three new sections were started. Now, the total number of sections is 16 and there are 21 students in each section. The numberof new students admitted is:

$$\frac{(856 + 167)^{2} + (856 - 167)^{2}}{856 \times 856 + 167 \times 167}$$ is equal to :

The value of $$\frac{(67.542)^{2} - (32.458)^{2}}{(75.458 - 40.374)}$$ is :

5 out of 2250 parts of earth is sulphur. What is the percentage of sulphur in earth ?

Ais 30% moreefficient than B. How muchtimewill they, working together, take to complete a job which A alone could have donein 23 days ?

An express train traveled at an average speed of 100 km / h, stopping for 3 minutes after every 75 km. How long did it take to reach the destination 600 km,from the starting point ?

Twotrains start from P and Q respectively and travel towards each otherat a speed of 50 km/hr and 40 km/hr respectively. By the time they meet, the first train has traveled 100 km. more than the second. The distance between P and Qis :

A merchant has 1000 kg of sugar, part of whichhesells at 8% profit and the rest at 18% profit. He gains 14% on the whole. The quantity sold at 18% profit is -:

Aman took a.loan froma bankat the rate of 12% p.a. simple interest. After 3 years, he had to pay Rs.5,400 interest only for the period. The principal amount borrowed by him was :

A and B take partin a 100 m race. A runs at 5 km per hour. A gives B a start of 8 m andstill beats him by 8 seconds. The speed of Bis :