Question

U.2
Question 8
$100
A works twice as fast as B. If B can complete a work in 12 days independently, the number of days in which A and B can together finish the work in
4 days
6 days
8 days
18 days​

Answer 1

Answer:

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Explanation:

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Answer 2

Answer:

4days

Explanation:

A works twice as fast as B

Bcan complete a work in 12 days independently

so A can do the work in 6 days

B's 1 day work=1/12

A's 1day work =1/6

Both(A+B) one day work =1/12+1/6=3/12=1/4

so

A+B can complete the work in 4 days

PLEASE GIVE ME $100

THANX