Question

A B and C together can complete a work in 15 days B and C can complete the same work in 20 days in how many days A alone can complete the same work​

Answer 1

Answer:

60days

Step-by-step explanation:

A+B+C=15DAYS

B+C=20DAYS

let total work =15*20=300unit

A+B+C=300/15=20unit

B+C=300/20=15unit

So..

A+15=20

A=20-15

A=5unit

Total work of A=300/5=60days