Question

Tick (✓) the correct answer:
A machine fills 420 bottles in 3 hours. How many bottles will it fill in 5 hours?
(a) 252
(b) 700
(c) 504
(d) 300

Answer 1

(b) 700

Let x be the number of bottles filled in 5 hours.

No. of bottles	420	$x$
Time (h)	3	5

More number of bottles will be filled in more time.

$$\begin{gathered} \mathrm{Now},\frac{420}{3}=\frac{x}{5} \\ \Rightarrow x=\frac{420\times 5}{3} \\ \Rightarrow x=700 \end{gathered}$$

Therefore, 700 bottles would be filled in 5 h.