Question

$15$ labourers can fill $35$ boxes in $7$ days. How many labourers can fill $65$ boxes in $5$ days ?

• A. $13$
• B. $39$
• C. $45$
• D. $55$

Answer 1

The correct option is B $39$

b'

Number of labourers is directly proportional to the number of boxes and number of boxes is directly proportional to number of days. Set the proportions and solve.

We are asked to find out the number of labourers So we, compare each item with the number of labourers as below.
More number of boxes ⇒⇒'39