Question

2) A can do a piece of work in 4 days and isson
so it in 12 days. What is the number of days
I required to do the same work together?​

Answer 1

Part of work A can do in 1 day = 1/4

Part of work A's son can do in 1 day = 1/12

Part of work done by A + A's son in 1 day = 1/4 + ㅤㅤㅤㅤ1/12 = 4/12 = 1/3

Part of work done by A + A's son in 3 days = 3 * ㅤㅤㅤㅤㅤ1/3 = 1 (full work)

Therefore, time taken by A and his son together to complete the work is 3 days.

Ans. = 3 days.