Question

14. A, B and C can do a piece of work in 6, 8, and 12 bours respectively. They started the work
together and after 1 hour B left the work. Is how much time will the remaining work be completed by A and C?​

Answer 1

Step-by-step explanation:

in one hour, A,B and C will complete 9÷24 of work.

after that work left is 15÷24.

in one hour A and C will complete 7÷24 of work.

$\frac{15}{24} \div \frac{7}{24}$

leading to 15÷7.

so they would complete their work in 7÷15 hours.