2014 AMC 10A Problem 3

Below is the professionally curated solution for Problem 3 of the 2014 AMC 10A, from LIVE by Po-Shen Loh. You can also try the full timed exam, view all 2014 AMC 10A solutions, or check the answer key.

All of the real AMC 8, AMC 10, AMC 12, and AIME problems in our complete solution collection are used with official legal permission of the Mathematical Association of America (MAA).

Concepts:moneyfraction

Difficulty rating: 960

3.

Bridget bakes 4848 loaves of bread for her bakery. She sells half of them in the morning for $2.50\$ 2.50 each. In the afternoon she sells two thirds of what she has left, and because they are not fresh, she charges only half price. In the late afternoon she sells the remaining loaves at a dollar each. Each loaf costs $0.75\$ 0.75 for her to make. In dollars, what is her profit for the day?

2424

3636

4444

4848

5252

Solution:

In the morning Bridget sells 2424 loaves for 24$2.50=$6024\cdot\$2.50=\$60.

She has 2424 loaves left. In the afternoon she sells 2324=16\frac23\cdot24=16 loaves at half price, earning 16$1.25=$2016\cdot\$1.25=\$20.

The remaining 88 loaves sell for $8\$8, so her revenue is $60+$20+$8=$88\$60+\$20+\$8=\$88. Her cost is 48$0.75=$3648\cdot\$0.75=\$36.

Her profit is $88$36=$52\$88-\$36=\$52.

Thus, E is the correct answer.

Problem 3 in Other Years