2 years ago

Jen wants to buy four books: for $10.00, for

1 answer:

6 0

20 + (0.4 × 15) + 12 + (0.4 × 10) = 20 + 6 + 12 + 4 = 42

20 + 15 + 12 + 10 = 57

57 - 42 = 15

15 ÷ 57 × 100 = 1500 ÷ 57 = 26.3

Ans = $42.00, 26% off ...

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