Question

If a:b=4:5 and b:c=6:7,calculate a:c

Answer 1

a : b = 4 : 5

b : c = 6 : 7

.

Since both ratio has b, we will make the b the same:

a : b = 4 x 6 : 5 x 6 = 24 : 30

b : c = 6 x 5 : 7 x 5 = 30 : 35

.

Since the bs are the same, we can combine the two ratio:

a: b : c = 24 : 30 : 35

.

Find a : c

a : c = 24 : 35

.

Answer: The ratio of a : c is 24 : 35

Answer 2

a:b:c=24:30:35
Therefore,
a:c=24:35