**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

**Solution:**

(b) 700

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

No. of bottles | 420 | |

Time (h) | 3 | 5 |

More number of bottles will be filled in more time.

Now, $\frac{420}{3}=\frac{x}{5}$

$\Rightarrow x=\frac{420 \times 5}{3}$

$\Rightarrow x=700$

Therefore, 700 bottles would be filled in 5 h.