Question

find a:b:c when a:b =4:7 and b:c =5:3​

Answer 1

Step-by-step explanation:

we can see that value of b is different in both ratios

firstly we have to make them equal

multiply 4:7 by 5 and 5:3 by 7

a:b = 5(4:7) = 20:35

b:c = 7(5:3) = 35:21

hence a:b:c = 20:35:21