Anum can complete an assignment in 5 days and Ali can complete the same assignment in 20 days. The time by both Anum and Ali to complete the assignment working together is:
Q1. Anum can complete an assignment in 5 days and Ali can complete the same assignment in 20 days. The time by both Anum and Ali to complete the assignment working together is:
Answer: 4 days
Explanation: Anum's rate = 1/5/day, Ali's rate = 1/20/day; combined = 1/5+1/20 = 5/20 = 1/4; together they finish in 4 days.