Question

There are 42 new houses being built in a neighborhood. Last month, 2/3 of them were sold. This month, 3/7 of the remaining houses were sold. How many houses are left to be sold?

Answer 1

12

Explanation: Take the original number of houses, 42, then multiply by the first fraction, 2/3, to see how many are left the first time. You’ll get that 28 are left. Then multiply by the next fraction, 3/7, to see the final houses to be sold. You’ll get 12.