# If three fire-fighters can clear 240 metres of a fire trail in two days, how many metres of fire trail can be cleared by four fire-fighters in three days, working at the same rate?

Jun 25, 2018

$\textcolor{b l u e}{480 \text{ meters}}$

#### Explanation:

If $3$ firefighters can clear $240$ meters in 2 days;
$\Rightarrow 3$ firefighters can clear $240 \div 2 = 120$ meters in 1 day;
$\Rightarrow 1$ firefighter can clear $120 \div 3 = 40$ meters in 1 day.

$\Rightarrow 4$ firefighters can clear $40 \times 4 = 160$ meters in 1 day;
$\Rightarrow 4$ firefighters can clear $160 \times 3 = 480$ meters in 3 days.