Question

There are 40 houses in a neighborhood.

• Company X provides electricity to 1/8 of the houses.
• Company Y provides electricity to 1/2
of the houses.
• Company Z provides electricity to the remaining houses.

In this neighborhood, Company Z provides electricity to —

Answer 1

15 houses

Explanation:

40 ÷ 8 = 5 Company X provides electricity to 5 houses

40 - 5 = 35

Half of 40 = 20 Company Y provides electricity to 20 houses

35 - 20 = 15

Company Z provides electricity to 15 houses.

Answer 2

15.

Explanation: 1/8 of 40 is 5, 1/2 of 40 is 20. 20+5=25 and 40-25=15