Question

A, B and C can do a piece of work in 10, 15 and 20 days respectively. A and B decide to do the work together but C opts out. In how many days will A and B together complete the work​

Answer 1

Answer:

6 days

Step-by-step explanation:

first find LCM of 10 and 15 it's 30

10×3=30

15×2=30

3+2=5

30÷5=6

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