Question

sam can do a work in 10 day while john can do it in 20 days how many will they complete together​

Answer 1

$\huge \underline \mathbb {SOLUTION:-}$

A can complete the work in 30 days, thus in one day A can do = 1/30th part of work

B can do this work in 20 days, thus in one day B can do =1/20th part of work

Both A and B work together then they can do part of work

1/30 + 1/20

(2 + 3)/60

= 5/60 part of work

Or 1/12 part of work

If they work together then they can complete the work early. Let they take x days to complete the entire work

1/12 × x days = 1

x/12 = 1

Cross multiplication

x = 1 × 12

x = 12 days

It suggest, that if both A and B work together then they can complete the entire work in 12 days.

Answer: if both A and B work together then they can complete the en