A B and C can do a work in 12 15 25
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IS THE QUESTION IN THE FOLLOWING WAY
A, B, and C can complete a work in 12, 15, and 25 days respectively. A and B started working together whereas C worked with them in every third day. What is the number of days required to complete the work?
THEN YOUR ANSWER WILL BE = 6 and 6/49 days
Step-by-step explanation:
Since C works every 3 day , we consider that he does 1 work in 3*25 = 75 days ,
LCM of 12 15 and 75 is 300.
In 300 days they do 300 ( 1/12 + 1/15 + 1/75 )
= 25 + 20 + 4 = 49 works
One work is done in 300/49 = 6 and 6/49 day
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