Question

If sharma takes 7 days toknit a sweater,how much sweater does knit in one day on an average.

Answer 1

7 days = 1 sweater
1 day = ?

two ways to solve
>cross multiplication
>ratio

i.cross multiplication
=>
7days=1
1day=?
        =1/7

ii.ratio propotion
=>
7:1::1:?
7 * ? = 1*1
7? =1
? = 1/7

Answer 2

Hi friend,
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This is a direct variation problem-

7days=1sweater
1day=x sweater

In direct variation-:

7/1=1/x. (cross multiply)
7x=1*1
7x=1
x=1/7

1/7 part of sweater will be knitted in 1day.

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Hope it helped you.................