Question: Mark buys a loaf of bread for $4.20 and some cheese for $2.05. He gives the cashier $7.00. If the cashier only has 1 quarter and 1 dime in his till, plus a bunch of nickels, how many nickels does Mark get in his change?
Answer with step-by-step thinking: First subtract the cost of Mark's groceries from the amount he gives the cashier to find how much he gets in change: $7.00 - $4.20 - $2.05 = $0.75. Then subtract the value of a quarter in cents (25) and the value of a dime in cents (10) from the change amount to find how much Mark gets paid in nickels: $0.75 - $0.25 - $0.10 = $0.40. Now divide the amount Mark gets in nickels by the value per nickel in cents (5) to find how many nickels Mark gets: $0.40 / $0.05 / nickel = 8 nickels.
So the answer is 8.


Question: Jason drives past 3 convenience stores on his way to work. The distance between the first store and the second store is 6 miles. The distance between the second store and third store is 2/3rds longer than the distance between the first two stores. The distance from his house to the first store and the last store to work is the same, 4 miles. How long in miles is Jason's commute to work?
Answer with step-by-step thinking: First find the additional distance between the second store and the third store: 6 miles * 2 / 3 = 4 miles. Then add that to the distance between the first two stores to find the total distance between the second and third stores: 4 miles + 6 miles = 10 miles. Then add the distance between the first two stores, the distance from Jason's house to the first store, and the distance from the last store to work: 10 miles + 6 miles + 4 miles + 4 miles = 24 miles.
So the answer is 24.


Question: My cat's empty bowl weighs 420 grams. If I give my cat 60 grams per day and I always fill her bowl every 3 days, how much does her bowl weigh if after I ended up refilling her empty bowl she only ate 14 grams?
Answer with step-by-step thinking:
If I give my cat 60 grams per day and I fill it to last 3 days, then I put a total of 60 * 3 = 180 grams into her bowl. If the empty bowl weighs 420 grams and I put 180 grams the total weight is = 420 + 180 = 600 grams. If my cat only ate 14 grams then the bowl right now weighs 600 - 14 = 586 grams.
So the answer is 586.