ISRO Junior Personal Assistant 2010 Paper-II

The electricity bill of a certain establishment is partly fixed and partly varies as the number of units of electricity consumed. When in a certain month 540 units are consumed,the bill is Rs.1800. In another month 620 units are consumed and the bill is Rs.2040. In yet another month, 500 units are consumed, the bill for that month will be

A man sells Rs.4000, 10% stock at 150 and invests the proceeds partly in 6% stock at 80 and 7% stock at 96. He thereby increases his income by Rs.50. How much of the proceeds were invested in each stock?

There are 20 workers and one manager in a factory and their average monthly salary was Rs.1600. The manager whose salary was Rs.3000, retired and his place was taken by another. The average salary of all the 21 people became Rs.1750 per month. What was the salary of the new manager?

A screwdriver and a hammer currently have the same price.It the price of a screwdriver raises by 5% and the price of hammer goes up by 3% how much more will it cost to buy 3 screwdrivers and 3 hammers?

Ganesh invested 40% of his salary on food, 50% of the remaining on education and 10% of the remaining on other requirements. Now he is left with Rs.540. What is his salary?

A carpenter prepared 14 more toys on Tuesday than what he had prepared on Monday. Then on Wednesday he prepared 50% of the toys that were prepared on the previous two days together. If he had prepared 75 toys in the three days, how many toys did he prepare on Wednesday?

The average temperature of thefirst three days of a week is $$27^\circ$$ and of the next three days is $$29^\circ$$. If the average of the whole of the week is $$28.5^\circ$$ the temperature of the last day of the week is

If 8 students are seated on each bench, 3 benches are left over. If 5 students are seated on each bench, 12 students are left over. How many benches and students are there?

Two towers are 35 mtrs and 50 mtrs high and 20 mtr apart on level ground. Find the length of the rope connecting their tops?

If B is 10% heavier than A and C is 10% lighter than B, then what can you say about the relative weights of A & C?