Question

please give me answer with explanation

Answer 1

Given:

a : b = 2 : 3 x 4 = 8:12

b : c = 4 : 5 x 3 = 12:15

a:b:c = 8 : 12 : 15 x 2 = 16:24:30

c : d = 10 : 9 x 3 = 30:27

hence we got a:b:c:d = 16:24:30:27

a:b = 16:24

b:c = 24:30

c:d = 30:27

a:d = 16:27

b:d = 24:27