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17 Mar 2025, 09:10
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Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
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100% (03:17) correct
0% (00:00) wrong based on 1 sessions
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Alfred’s Coffee Shop offers a “buy six cups of coffee, get one free” discount, and Boris’s Coffee Shop offers 15% off all orders of six or more cups of coffee. At both shops, the regular price of a single cup of coffee is $2.60.
Quantity A
The total cost for one order of seven single cups of coffee from Alfred’s
Quantity B
The total cost for one order of sevensingle cups of coffee from Boris’s
Quantity A
The total cost for one order of seven single cups of coffee from Alfred’s
Quantity B
The total cost for one order of sevensingle cups of coffee from Boris’s
23 Mar 2025, 11:40
Kudos
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OE
At Alfred’s, an order of 7 single cups of coffee would cost 6($2.60) = $15.60, because the 7th cup is free.
At Boris’s, an order of 7 single cups of coffee would receive the 15% discount: 7($2.60)(0.85) = $15.47.
Alternatively, because the non-discounted price of a single coffee ($2.60) and the number of single cups of coffee ordered is common to both quantities, an actual cost calculation is optional. Instead, you could compare the discounts in percent terms. At Alfred’s, “buy six drinks get one free” means that, for every seven drinks you purchase, the last one is free. That’s one in seven drinks free, or 1.7 off, which is about (1/7)100%= 14.29% off. This is smaller than the 15% discount at Boris’s, so the total cost at Alfred’s is greater. By the way, remember to pick the greater quantity (Quantity A), not the “better deal”!
Answer: A
At Alfred’s, an order of 7 single cups of coffee would cost 6($2.60) = $15.60, because the 7th cup is free.
At Boris’s, an order of 7 single cups of coffee would receive the 15% discount: 7($2.60)(0.85) = $15.47.
Alternatively, because the non-discounted price of a single coffee ($2.60) and the number of single cups of coffee ordered is common to both quantities, an actual cost calculation is optional. Instead, you could compare the discounts in percent terms. At Alfred’s, “buy six drinks get one free” means that, for every seven drinks you purchase, the last one is free. That’s one in seven drinks free, or 1.7 off, which is about (1/7)100%= 14.29% off. This is smaller than the 15% discount at Boris’s, so the total cost at Alfred’s is greater. By the way, remember to pick the greater quantity (Quantity A), not the “better deal”!
Answer: A
