Question

Saleem can type 30 words per minute and Ranjit can type 50 words per minute. If Saleem needs 30 mins to finish a piece of work , how long will Ranjit take to finish the same work ?

Answer 1

let the total work done be '1 units'

let Ranjit can finish the same work in x minutes.

Saleem can finish a piece of work in 30 minutes

so then

ranjit can do the same work in x days .

30 × 30 / 1 = 50 × x / 1

50x = 900 => x = 18minutes

Answer:
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Ranjit can finish the Same work in 18 minutes