Question

If a : b = 2 : 5 and b : c = 3 : 7, then find a : b : c.​

Answer 1

Answer:

6:15:35

Step-by-step explanation:

a:b= 2:5

so, a/b= 2/5

b:c= 3:7

so, b/c= 3/7

L.C.M of 5 and 3 = (5×3) = 15

Now,

a:b = (2×3/5×3) = 6/15 = 6:15

b:c = (3×5/7×5) = 15/35 = 15:35

so, a:b:c = 6:15:35