Question

On Monday, it took 5 builders 3 and a 1/2 hours to build a wall. An identical wall needs to be built on Tuesday but only 2 builders are available. Each builder is paid £9.30 for each hour or part of an hour they work. Work out how much each builder will be paid for the work completed by Tuesday.

Answer 1

Answer:

8.75 hours is required for completing the work by 2 builders.

Step-by-step explanation:

5 builders need 3.5 hrs for completing the wall.

Therefore no of work hours required= (5×3.5) =17.5 work.

Therefore one builder can complete the work in 17.5 hours.

Therefore 2 builders can complete the work in (17.5/2) hours=8.75 hours.

Answer 2

Each builder will be paid £81.375 for the work, when it is completed by Tuesday.

Given:  

On Monday, it took 5 builders 3 and a $\frac{1}{2}$ hours to build a wall.

An identical wall needs to be built on Tuesday but only 2 builders are available.

Each builder is paid £9.30 for each hour or part of an hour they work.  

To find:  

Work out how much each builder will be paid for the work completed by Tuesday.

Solution:  

No of hours required by 3 builders = 5 $\times$305 = 17.5

Since 2 are available, $\frac{17.5}{2}$ = 8.75

Cost of one builder = 8.75 $\times$9.3 = £81.375