Question

a can do a piece of work in 18 days B is 20% more efficient than a the number of days B takes to complete the same piece of work is

Answer 1

answer is 15 days for B

Answer 2

B takes 15 days to complete the same piece of work.

Step-by-step explanation:

Since we have given that

Time taken by A to do a piece of work = 18 days

Ratio of efficiency of B to A is given by

120  :   100

= 6     :   5

(As B is 20% more efficient than A)

Number of days for B would be

$\dfrac{5}{6}\times 18\\\\=5\times 3\\\\=15$

Hence, B takes 15 days to complete the same piece of work.

# learn more:

Sakshi can do a piece of work in 20 days. tanya is 25% more efficient than sakshi. the number of days taken by tanya to do the same piece of work is:

a. 15

b. 16

c. 18

d. 25

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