Question

There are 70 new houses being built in a neighborhood. Last month, 2/5 of them were sold. This month, 5/7 of the remaining houses were sold. How many houses are left to be sold?

Answer 1

Answer: 22 houses.

Step-by-step explanation:

1. You can calculate the number of houses sold last month as following:

$70houses*\frac{2}{5}=28houses$

2. You can calculate the number of the remaining houses sold this month as following:

$28houses*\frac{5}{7}=20houses$

3. Then, the number of houses are left to be sold is:

$70houses-28houses-20houses=22houses$