Question

A completes a work in 10 days. B completes the same work in 15 days. After few days A leaves the work and B completes the remaining work in 10 days. Then after how many days does A left the work ?​

Answer 1

• A and B can complete the work in =(15x10)/(15+10)= 150/25= 6- days.
• In 3- days 1/2 part of the work will be completed.
• A can complete the work in 15- days and C can complete the work in 30- days.
• So both A and C can finish the complete work in =( 15 x 30)/(15+ 30)= 450/45= 10- days.
• Therefore both A and C can complete the remaining 1/2 part of the work in 1/2 x 10= 5- days. OK.

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Answer 2

Answer:

5

Step-by-step explanation:

15-10 = 5

Hence A left the work after 5 days.