Question

A carpenter can make $39$ chairs in $13$ days. How many days will he take to make $30$ chairs?

Answer 1

Given that,

Number of days require to make $39$ chairs $=$ $13$ days

Divide both side by $39$

Number of days require to make $1$ chair $=$ $\frac{13}{39}$ days

Divide both side by $30$

Number of days require to make $30$ chair $=$ $\frac{13}{39}\times 30=10$ days

Hence, $10$ days will he take to make $30$ chairs.