Question

Question 7(b)

Find the ratio of the following:

40 cm to 1.5 m

Answer 1

Ratios are used to compare quantities which have same units

To find the ratio of the given numbers we have to convert them into same units.(Since the units of two numbers are different, i.e. one is in cm and other in m).

1.5 m = 1.5 $\times$ 100 = 150 cm [$\because$ 1 m = 100 cm]

Now, ratio of 40 cm to 1.5 m = 40 cm : 150 cm

= 40 cm : 150 cm

= $\frac{40}{150}$

= $\frac{4}{15}=4:15$
[Dividing numerator and denominator by HCF of 40 and 150 i.e. 10]