Question

A medical camp was organised at a school. The heights of the students was measured. The heights of 4 children were noted down.
Alesha - 124 cm
Elena - 138 cm
Alina - 1 m
Laura - 1m 35 cm

What is the difference between the heights of the tallest child and the shortest child?

• A. 42 cm
• B. 3 cm
• C. 14 cm
• D. 38 cm

Answer 1

The correct option is D 38 cm

As per the question,
We are given the heights of $4$ children. Let us first convert the lengths to the same unit $\left(\text{cm}\right)$ to make the comparison easier.
Height of Alesha = 124 cm
Height of Elena = 138 cm
( 1 m = 100 cm)
Height of Alina = 1 m = 100 cm
Height of Laura = 1 m 35 cm = 100 cm + 35 cm = 135 cm
Height of Alina<Height of Alesha<Height of Laura<Height of Elena
We can clearly see that $1\text{m}$ is the shortest among all and 138 cm is the tallest among all.

We need to find 138 cm - 100 cm
Difference between the heights of the tallest child and the shortest child = 138 cm - 100 cm
= 38 cm