Question

There are 45 new houses being built in a neighborhood. Last month, 1/3 of them were sold. This month, 1/5 of the remaining houses were sold. How many houses are left to be sold?

Answer 1

1/3 x 45 = 15
45-15=30
1/5 x 30 = 6
30-6=24
So 24 houses are left to be sold.

Answer 2

1) 1/3 of 45 is 15 (this can be found by simply dividing 45 by 3.
2) Subtract this amount from the total, so that 45-15 = 30.
3) 1/5 of the remaining houses being sold would be 30 / 5, or 6.
4) Once again, subtract this amount from the total, resulting in 24 houses left.