Question

Monika is twice as good as sonika and together they complete a piece of work in 20 days. In how many days will monika alone will finish the work?

Answer 1

Answer

Monica alone will finish it in 30 days

Step-by-step explanation:

Let us suppose Sonika takes ' x ' days to complete the work

So,

Sonika's one day work = 1 / x

According to question,

Time taken by Monika to complete the work = ' 2x '

{ As it is given, Monika is twice as good as sonika }

Monika's one day work = 1 / 2x

Together they do 1 / x + 1 / 2x = ( 2+ 1 ) / 2x = 3 / 2x work in the same time

So the time taken to complete the work is 2 x / 3

It is given that,

They complete the work in 20 days, that is ,

2x / 3 = 20

2x = 20 * 3

2x = 60

Dividing both sides by 2 ,

2x / 2 = 60 / 2

x = 30

Hence,

Monica alone will finish it in 30 days

Answer 2

Answer:

m = 2

s = 1

3*20=60

Monika=60/2=30days