Study the given bar graph and answer the question given follows:

The below bar graph shows the time taken by a boy alone and a girl alone to complete the respective projects. (in days)

Find total time taken by one boy and one girl together working on project P and project S.

18

Project P

Let the total work on Project P = LCM of 10 and 15 i.e. = 30

Time taken by them together to complete the work on Project P = \(\frac{30}{5}\) = 6 days

Project S

Let the total work on Project S = LCM of 20 and 30 i.e. = 60

Time taken by them together to complete the work on Project S = \(\frac{60}{5}\) = 12 days

Total time = 6 + 12 = 18 days