# A team of 10 people made 1200m long in 3 days. If the team has 15 people have to make 2400m,how many day they need to finish work?

Mar 31, 2018

$4$ days.

#### Explanation:

As $10$ people in $3$ days made $1200 m$ long

$1$ person in $3$ days will make $\frac{1200}{10} = 120 m$ long

and $1$ person in $1$ day will make $\frac{120}{3} = 40 m$ long

Therefore $15$ people in $1$ day will make $40 \times 15 = 600 m$ long

Hence to make $2400 m$, $15$ people will take $\frac{2400}{600} = 4$ days