Question

Tom takes 18 days to finish a job. Mike is 20% more efficient than Tom. What number of days would Mike take to finish the job?​

Answer 1

Answer:

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Step-by-step explanation:

Efficiency ratio of Mike to tom = 120:100 = 6:5

Let the number of days Mike takes be x. So,

6:5:: 18: x

x= 5 × (18/6)

No of days= (Efficiency of Tom × No of days Tom need)/ Efficiency of Mike

x= 15 days

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