Q: Heather is going to sew 150 aprons that are to be used for a kiddie crew program. She already was able to sew 13 aprons, and today, she sewed three times as many aprons. How many aprons should she sew tomorrow if she wants to sew half of the remaining number of aprons needed?
A: Heather has sewn 13 x 3 = 39 aprons today. The total number of aprons sewn is 13 + 39 = 52. Heather needs to sew 150 - 52 = 98 aprons more. So, she needs to sew 98 / 2 = 49 aprons tomorrow. The answer is 49.

Q: It takes Jerome 6 hours to run the trail around the park and it takes Nero 3 hours. If Jerome runs at 4 MPH, what speed (in MPH) does Nero run in the park?
A: You can find the distance of Jerome's run by multiplying the time he spends running by his speed: 4 miles / hour * 6 hours = 24 miles. Then find Nero's speed by dividing the distance he runs by the time he spends running: 24 miles / 3 hours = 8 miles / hour. The answer is 8.

Q: Marnie opens a bag of chips and eats 5 of them to see if she likes them. She does, so she eats 5 more. The bag has 100 chips in it and starting on the second day she has them, Marnie eats 10 each day. How many days does it take for Marnie to eat the whole bag of chips?
A:
Marnie has already eaten 5 of the chips + 5 more = 10 chips Marnie ate. The bag has 100 chips in it and Marnie has only eaten 10, 100 - 10 = 90 chips left. If Marnie eats 10 chips a day starting from the second day she has them, it will take her 90 chips in the bag / 10 chips Marine eats a day = 9 days to eat the whole bag. However, Marnie also ate chips on the first day she bought them, so 9 + 1 = 10 days to eat the whole bag. The answer is 10.