Question

48) A contractor completed five-ninths of a job before a second contractor completed an additional one-third. What fraction of the job is left undone? a) one-ninth b) four-ninths c) two-thirds d) eight-ninths ​

Answer 1

Answer:

The fraction of the job left undone is , option a) one-ninth

Step-by-step explanation:

Given : A contractor completed = 5/9 th of a job

           Another contractor completed = 1/3 rd of the job

          Job left undone fraction = ?

Solution : Total job completed = 5/9 + 1/3

                                                 LCM of 3 & 9 is 9

                                                 = (5+ 1x3)/9

                                                 = (5+3)/9

                                                 = 8/9

Job left undone = Total job - Job completed

                          = 1 - 8/9

                          = (9-8)/9

                          = 1/9

The fraction of the job left undone is 1/9, option a)