A man spends of his income on food, of it on house rent and the remaining which is on other commodities. Find his house rent.
A zoo has 4 times as many gorillas as tigers. There are 4 more tigers than there are zebras at the zoo. If z represents the number of zebras, in terms of z, how many gorillas are in the zoo ?
4z + 3
z + 4
z + 8
4z +16
The average of three numbers is 15. What is two times the sum of the three numbers ?
18
15
90
45
What is the value of the expression
4
6
6.5
11
If . What is the value of
If 2m =4x and 2w =8x, what is m in terms of w ?
w - 1
w + 2
2w - 3
2w + 1
If 3 x +2 y = 5 a + b, and 4 x - 3 y = a + 7 b, then x is equal to -
a + b
a - 2 b
2 a + b
5 a - 6 b
What is the difference between the sum of all positive odd integers less than 102 and the sum of all positive even integers less than 102 ?
24
12
101
51
A certain copy machine produces 13 copies every 10 seconds. If the machines operates without interruption, how many copies will it produce in an hour ?
78
4680
578
1768
