1.

A can complete a work in 10 days B in 12 days c in 15 days.All of them began to

Answer»

Answer:

7

Step-by-step explanation:

FIRST do C-b that is 15-12=3

and then a-cb we take cb because in first step we FIND the value of c and b which was 3

now we will sub a-cb=10-3=7 ANS



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