Question

If 18 workers are required to complete the work in 15 days ,in how days will 30 workers complete the same work

Answer 1

30×x= 18×15

30x= 270

x= 270÷ 30

x= 9

Days = 9

Answer 2

☯GIVEN :

• Days taken to complete the work by 18 workers = 15 days

☯TO FIND :

• Days taken to complete the work by 30 workers .

➲SOLUTION :

✞Using Unitary Method :

▪Days taken to complete the work by 18 workers = $\sf{15 \:days}$

▪Days taken to complete the work by 1 worker = $\sf{15\times 18}\:days$

▪Days taken to complete the work by 30 workers :

$\leadsto \sf{\dfrac{15\times18}{30}}$

$\leadsto \sf{\cancel{\dfrac{270}{30}}}$

$\leadsto \underline{ \huge{\boxed{ \purple {\bf{9}}}}}$

$\huge{\green {\therefore}}$ Days taken to complete the work by 30 workers = 9 days.