If 7 : x = 35 : 20, then what is x ?
4
21
7
35
If 3, 5, x, 20 are in proportion then value of x is
16
15
12
9
If x : y = a : b then
bx = ay
ab = xy
xa = by
xy = 1
10 workers complete a job in 8 days. In how many days can 16 workers complete it ?
80
5
10
If a : b = 4 : 5 and b : c = 6 : 7 then the ratios a : c is:
4 : 5
6 : 7
24 : 5
24 : 35
If 8 : 12 = 12 : k, then what is k?
8
18
The three angles of a triangle are in the ratio 1 :3 : 5 then the smallest angle is:
60°
100°
20°
10°
The price of 8 books is Rs.300, What is the price of 18 books?
675
31
14
81
If a : b = 4 : 5 & b : c = 15 : 6 then the ratio a : b : c is
12 : 15 : 6
2 : 5 : 6
4 : 5 : 15
4 : 5 : 6
