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.

Question: Adam teaches 50 students a year. How many students will Adam teach in 10 years if in the first year he only teaches 40 students?
Answer: Step-by-step reasoning process: Adam will teach 50 * 9 = 450 students in 9 years. So, in 10 year Adam will teach 450 + 40 = 490 students.
So the answer is 490.

Question: The school band is having a car wash to raise money. Their goal is to collect $150. So far they have earned $10 each from three families and $5 each from 15 families. How much more money do they have to earn to reach their goal?
Answer: Step-by-step reasoning process: The school band earned $10 / family * 3 families = $30 from three families. The school band earned $15 / family * 5 families = $75 from 15 families. The school band earned $30 + $75 = $105 total. The school band needs $150 - $105 = $45 more to reach their goal.
So the answer is 45.

Question: Martha has 18 crayons. She lost half of them, so she bought a new set of 20 crayons. How many crayons in total does Martha have after the purchase?
Answer:
Step-by-step reasoning process: In the beginning, Martha lost 18 / 2 = 9 crayons. So after she bought a set of new crayons, she has in total 9 + 20 = 29 crayons.
So the answer is 29.