Question

Palak can do a piece of work in 28 days. manisha is 75% more efficient than palak. the number of days taken by manisha to do the same work is

Answer 1

Ratio of efficiency of Palak and Manisha=100%:175%=4:7,

then

ratio of time taken by Palak and Manisha =7:4,

let days taken by Palak=7x,

days taken by Manisha=4x,

A.T.Q,

7x=28,
x=4,

then
days taken by Manisha=4×4=16 days

Answer 2

Answer:

Concept:

It is concept of time and work

Find:

the number of days taken by manisha to do the same work is

Given:

Palak can do a piece of work in 28 days. manisha is 75% more efficient than palak. the number of days taken by manisha to do the same work is

Step-by-step explanation:

Ratio of efficiency of Palak and Manisha = 100% : 175% = 4:7

then

ratio of time taken by Palak and Manisha =7:4

Suppose Manisha takes x days to do the work.

7 : 4 :: 28 : x

$x = ( \frac{4 \times 28}{7} )$

x= 16 days.

Hence, manisha takes 16 days to complete the work.

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