Question

11. A board was cut into two pieces whose lengths are in the ratio 2:5. The longer piece was 45 cm.

Answer 1

Answer:

The shorter piece is 18 cm long.

Step-by-step explanation:

A ratio can be written as a fraction. So, 2:5 can be written as $\frac{2}{5}$

Let the shorter piece be x cm long.

This means:

$\frac{x}{45} = \frac{2}{5}$

If we cross multiply we get

5x = 2(45)

5x = 90

x = 18

Answer 2

Answer:

Step-by-step explanation:

2 : 5

x : 45

x=45x2/5

x=90/5

x=18