a:b = 4:7, b:c = 5:6 হলে a:b:c = কত হবে?

a:b = 4:7, b:c = 5:6 হলে a:b:c = কত হবে?

A 4:7:5

B 4:7:6

C 20:35:42

D 20:24:35

Solution

Correct Answer: Option C

a:b = 4:7 = (4x5):(7×5) = 20:35

b: c = 5:6 = (5×7):(6x7) = 35:42

a:b:c = 20:35:42