Question

A can do a work in 10 days and B can do it in 15 days they work together for 4 days and then a left the work in how many days will be finish the remaining work​

Answer 1

Answer:

A and B together can do it in 6 days. In 4 days 2/3rd work will be finished. So 1/3rd work is left that B should finish.

1/15 * x = 1/3

X = 5 days

Hence B require 5 more days to finish the work

Answer 2

Answer:

3 Days

Step-by-step explanation:

Question:

"A" can do a work in 10 days and "B" can do it in 15 days they work together for 4 days and then a left the work in how many days will be finish the remaining work.

Solution:

A can do work in = 10 Days

B can do work in = 15 Days

A' s 1 Day work = 1 / 10 [Equation 1]

B' s Day work = 1 / 15

1 Day work of A and B:

(A + B)' s 1 Day work = 1 / 10 + 1 / 15

→ 3 + 2 / 30

→ 5 / 30

→ 1 / 6

Now, Let us consider (A + B) worked together for x days.

So, A' s 1 day work = 1 - x / 6 ÷ 5 = 6 - x / 30 [Equation 2]

From, Equation 1st and 2nd, we get:

→ 1 / 10 = 6 - x / 30

→ 30 / 10 = 6 - x

→ 3 = 6 - x

→ x = 6 - 3

→ x = 3

Both A and B can finish remaining work in 3 Days.