Question

- A can do a certain job in 12 days. B is 60% more efficient than A. Find the number of days taken
by B to finish the job.​

Answer 1

Answer:

Step-by-step explanation:

we must inverse variation

A takes = 12

160% A= y days

it is inverse multiplication

A x 12 = 160A/100 x y

12 = 160/100 x  y

12 = 8/5  x   y

1.5 x 5 = 5

7.5

b takes 7.5 days

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