Question

$12$ children can complete a piece of work in $21$ days. Approximately, how many children will be required to complete the same piece of work in $15$ days?(Approximately)

• A. $24$
• B. $14$
• C. $22$
• D. $17$

Answer 1

The correct option is D $17$

12 children : x children : : 21 days : 15 days
$x=\frac{12\times 21}{15}=\frac{84}{5}=16.8\approx 17$.