Question

Two bricklayers, Sam and Joe, are working on your house. Sam can complete the work in 5 hours, while Joe can complete the work in 3 hours. How many hours does the bricklaying take if they work together? fifteen eighths fifteen ninths six eighths four thirds

Answer 1

 Your equation is 1/5 + 1/3 =1/x To solve you have to find the common denominator which is 15 So (1/5)3 and (1/3)5

                                          = 3/15+5/15=8/15

                                                  8/15=1/x now cross multiply

                                                   =15/8

This is the answer I got.

                                                 

                         

            

Answer 2

☺☺☺☺☺☺☺☺☺Can You Explain Why There Are "Fifteen Eights , Fifteen ninths and six eights and four thirds pls or take a picture