Question

How many students have heights less than $220$ cm?

• A. $40$
• B. $63$
• C. $48$
• D. $53$

Answer 1

The correct option is B $63$

From the histogram, the class width of number of students:

$120-140$ is $4$

$140-160$ is $10$

$160-180$ is $24$

$180-200$ is $10$

$200-220$ is $15$

$220-240$ is $7$.

Therefore, the number of students having heights less than $220$ cm $=15+10+24+10+4=63$.

Hence, option $B$ is correct.