Question

There are 45 new houses being built in a neighborhood. Last month 2/3 of them were sold. This month 1/3 of the remaining houses were sold. How many houses are left to be sold?

Answer 1

10

Explanation:

`45*(1)/(3) *(2)/(3) =45*(2)/(9) =10`

2/3 of the houses sold is equivalent to 1/3 of the houses remaining, so multiply the original number by 1/3 and 2/3 (since 1/3 of the remaining sold this month) to get the # of remaining houses.