Question

There are 40 houses in a neighborhood. Company X provides electricity to 1/8 of the houses. Company Y provides electricity to 2/5 of the houses. Company Z provides electricity to the remaining houses. In the neighborhood, Company Z provides electricity to-?

Answer 1

j is the answer becoz 1/8 of the houses is 5 2/5 of the 40 is 16 and 16 +5 =40-21=19

Answer 2

z = 19

Explanation:

40 = x + y + z

40 = (1/8 * 40) + (2/5 * 40) + z

40 - 5 - 16 = z

19 = z