A and B seperately do a work in 10 and 15 days respectively . They worked together for some days and then A completed the remaining work in 5 days . For how many days did A and B worked together ??
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Answered by
5
Answer:
Step-by-step explanation:
Hala
Given
A can do work in 10 days => work done in 1 day is W / 10
Let W be the total work
B can do work in 15 days => work done in 1 day is W / 15
Let n be the number of days they both work together
work done by together in a day = W / 10 + W / 15 = W / 6
=> n * W / 6 + 5 * W / 10 = W
=> n * W / 6 = W/2
=> n =3
hence the number of days they worked together is 3 days
Answered by
5
Answer:
Hey mate....
Answer is 3 days......
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