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:
z = 19
Explanation:
40 = x + y + z
40 = (1/8 * 40) + (2/5 * 40) + z
40 - 5 - 16 = z
19 = z
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