30% of 140 = x% of 840, the value of x is
5
6
4
3
If 0.75 : x : : 5 : 8, then x is equal to
1.12
1.20
1.25
1.30
If 25 : b = 3 : 9 then the value of b is
65
75
85
95
Two numbers are in the ratio 3 : 5. If 9 is subtracted from each , the new numbers are in the ratio 12 : 23. The smallest number is
27
33
49
55
If x : y = 2 : 3 and 2 : x = 1 : 2, the value of y is :
1/3
3/2
9
The ratio of 20 miles to 25 km is:
6 : 5
4 : 5
32 : 25
33 : 50
The ratio of the father's age to son's age is 4 : 1. The product of their ages is 196. The ratio of their ages after 5 years will be
3 : 1
10 : 3
11 : 4
14 : 5
The ratio of number of boys and girls in a school of 720 students is 7 : 5. How many girls should be admitted to make ratio 1 : 1 ?
90
120
220
100
If 4x + 3y : 6x + 5y = 11 : 17 find x : y.
2 : 1
4 : 1
5 : 1
x varies inversely as square of y. Given that y = 2 for x = 1, the value of x for y = 6 will be equal to
1/9
