Question

If you ans this i will mark you as brainlist .A and b can do a piece of work in 10 days. B and C can do the same in 15 days. C and A can do the same work in 20 days. In how many days can see alone complete the work.

Answer 1

Answer:

Step-by-step explanation:

A and b can do in 10 days

That means they can do 1/10 work in 1 day

B and c do in 15days

They can do in 1\15 in 1day

C and a can do in 20 days

They can do 1\20 in 1 day

Let c be x

Hence a is 20-x

Hence b is 10-(20-x)

Hence c is also 15-(10-(20-x))

Hence x=15-(10-(20-x))

X=15-10+20-x

X+x=25

2x=25

X=25/2

X=12.5

C can do work alone in 12.5 days.

This can be wrong I haven't done a question like this in a while.

Answer 2

trick to answering short time