$20.01
step-by-step explanation:
the sale price is (1.00 - 0.77)($87), or 0.23($87), or $20.01.
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1/3 + 1/3 ≠2/6 because 1/3 alone = 2/6
step by step explanation:
1/3 + 1/3 = 2/3 2/3=4/6