Question

A photographer enlarges copies in the ratio 5:4. The length of the headline "BRIDGE

COLLAPSES is 8 cm on the original. How long is the headline on the enlarged copy?
(2marks)​

Answer 1

The length of the headline on the enlarge copy is 10 cm

Explanation:

A photographer enlarges copies in the ratio 5 : 4

That means the copies will be
`(5)/(4)` of the original copies

The length of the headline "BRIDGE COLLAPSES" is 8 cm on the original

Let us use the ratio method to find the length of the headline on the enlarged copy

→ Enlarged : Original

→ 5 : 4

→ x : 8

By using cross multiplication

∵ x × 4 = 5 × 8

∴ 4 x = 40

Divide both sides by 4

∴ x = 10

∵ x represents the headline on the enlarge copy

∴ The length of the headline on the enlarge copy is 10 cm