Question

The amount collected by $15$ students for flood relief find is given below. Answer the following.

Amount	Number of students
$0-10$	$3$
$10-20$	$4$
$20-30$	$5$
$30-40$	$2$
$40-50$	$1$

(i)How many students collected less than $Rs.20$?

Answer 1

Number of student who collected less than $Rs.20$

$=4+3=7$ students