Question: At the patisserie, a single layer cake slice is $4 and a double layer cake slice is $7. Dusty buys 7 single layer cake slices and 5 double layer cake slices. If he pays with a $100 bill, how much change does he receive?
Answer: Step-by-step reasoning process: Single layer cake slices cost $4 x 7 = $28. Double layer cake slices cost $7 x 5 = $35. All the cake slices together cost $28 + $35 = $63. He will receive change of $100 - $63 = $37.
So the answer is 37.

Question: Thirty students run in a charity race to raise money for the hurricane victims. Ten of the students raised $20 each. The rest of the students raised $30 each. How much did the students raise in all?
Answer: Step-by-step reasoning process: Ten students raised a total of $20 x 10 = $200. There are 30 - 10 = 20 students who raised $30 each. Twenty students raised a total of $30 x 20 = $600. Therefore, the students raised a total of $200 + $600 = $800.
So the answer is 800.

Question: Scott, Mary, and Ken committed to raising $4,000 for their local children’s cancer hospital. Right now, Mary’s collection is five times what Ken has, but three times Scott’s funds. If Ken has $600, by how much have the three exceeded their goal?
Answer: Step-by-step reasoning process: Mary has collected 5 * $600 = $3000. Scott therefore has $3000 / 3 = $1000. All together, they have raised $3000 + $1000 + $600 = $4600. They have therefore exceeded their goal by $4600 - $4000 = $600.
So the answer is 600.

Question: There are 180 school days in the academic year. Aliyah packs a lunch half the time. Becky packs her lunch half as much as Aliyah. How many days a year does Becky pack her lunch?
Answer:
Step-by-step reasoning process: Aliyah packs her lunch ½ the time, so in 180 school days / 2 = she packs her lunch 90 times. Becky packs her lunch ½ as much as Aliyah, so 90 times / 2 = 45 times a year.
So the answer is 45.