Question

express each of the following ratios in simplest form: 3m:420cm

Answer 1

First convert m to cm
1m=100cm
3m=3×100 cm
3m=300cm
300/420
=5/7

Answer 2

✪Convert each term into same unit.

✪1 m=100cm

$\frac{300}{420} =\frac{30}{42} =\frac{5}{7}$