Question

One carpenter builds 1/5 of a house in 3/4 of a day and the other builds 2/5 of a house in the same amount of time. How many houses do the two carpenters build in total per day?​

Answer 1

4/5 houses

Step-by-step explanation:

The speed of the first carpenter is:

(1/5 house) / (3/4 day) = 4/15 house/day

The speed of the second carpenter is:

(2/5 house) / (3/4 day) = 8/15 house/day

Together, their combined speed is:

4/15 house/day + 8/15 house/day = 12/15 house/day

= 4/5 house/day

Per day, the two carpenters build 4/5 of a house.