Question

The Claude crayon company can make 2400 crayons in 4 minutes which is filled in a box at the same time . If each crayon box has 12 crayons, how many crayon boxes can they make in 15 minutes?

• A. 750
• B. 800
• C. 900
• D. 1000

Answer 1

The correct option is A

750

Let the number of crayons made in 15 minutes be $x$

More the time , more crayons will be made, hence direct proportion

$\frac{2400}{x}$ = $\frac{4}{15}$

$\Rightarrow x=\frac{2400\times 15}{4}$

= 9000

Each box has 12 crayons,

Number of boxes required for 9000 crayons = $\frac{9000}{12}$ = 750

$\therefore$ crayons for 750 boxes can be made in 15 minutes