Answer:
first one is cheaper
Explanation:
1st : 660 * .40 = 264 -> 660 - 264 = 396
2nd : 660 * .30 = 198 -> 660 - 198 = 462 THEN 462 * .10 =
46.2 -> 462 - 46.2 = 415.8
1st one is cheaper.
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