In completing a task, A is thrice as fast as C and B is twice as fast as C. When all three work together, they can compete the task in 15 days. In how many days can A alone complete the task?

In completing a task, A is thrice as fast as C and B is twice as fast

1.	In completing a task, A is thrice as fast as C and B is twice as fast as C. When all three work together, they can compete the task in 15 days. In how many days can A alone complete the task?
A.	20 days
B.	30 days
C.	45 days
D.	90 days
Answer» C. 45 days

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In completing a task, A is thrice as fast as C and B is twice as fast as C. When all three work together, they can compete the task in 15 days. In how many days can A alone complete the task?

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