Question

The lengths of three pencils A, B and C are in the ratio of 2:3:5. If the length of A is 6 cm, find: a) the length of B and b) the length of C​

Answer 1

Answer: B = 9 cm, C = 15 cm

Explanation:

If the ratio of A to B to C is 2:3:5, we can write:

A = 2x

B = 3x

C = 5x

and all we have to do is solve for x.

Since we know A = 2x = 6, we have 2x = 6 and x = 3.

So for B we can plug in 3x = 3(3) = 9 cm

And for C we can plug in 5x = 5(3) = 15 cm

If you put these numbers in a ration, 6:9:15 and reduce as much as possible, you'll see you get 2:3:5.