If 3 x - 4 y = 5 and then what is the value of x?
-5 y
-5 x
2
3
On level ground, a man 6 feet tall casts a shadow 8 feet long, at the same time a tree casts a shadow 20 feet long. The height of the tree is-
13 ft
15 ft
11 ft
10 ft
If one rupee can buy x pieces of paper, how many rupees are needed to buy y reams of paper? (Note: 1 ream = 500 pieces of paper)
What is the least number that can be added to 42,042 to produce a result divisible by 9?
6
8
4
9
In a school, 40% of the students play football and 50% play cricket. If 18% of the students neither play football nor cricket, the percentage of the students playing both is-
30%
42%
22%
8%
If prices are reduced 25% and sales increase 20%, what is the net effect on gross receipts?
They increase by 8%
They decrease by 10%
They remain the same
They increase by 12%
If m and n are negative integers, and if m-n=1, what is the least possible value of mn?
5
What single discount is equivalent to two successive discounts of 10% and 15%?
23%
24.5%
28%
23.5%
A certain sum of money becomes three times of itself in 20 years at simple interest. In how many years does it become double of itself at the same rate of simple interest?
13 years
10 years
21 years
15 years
A farmer raises hens and cows. If his animals have a total of 120 heads and a total of 300 feet, how many hens does the farmer have?
50
80
40
90
