Q: Michael buys his suit for $430 and shoes for $190. So, if he gets a $100 discount, what was the amount that he paid to the seller?
A: The amount before the deduction is $430 + $190 = $620. The amount paid to the seller after the discount is $620 - $100 = $520. The answer is 520.

Q: Erin runs her own launderette and needs to cash in the change from the machines. There are 80 quarters and 100 dimes in every machine in the launderette. When Erin empties all of the machines and cashes in the change, she has a total of $90. She had no money before she emptied the machines and each machine held the same amount of money. How many machines are in the launderette?
A: There are 4 quarters in a dollar so in quarters, each machine holds 80 quarters / 4 = $20. There are 10 dimes in a dollar so in dimes, each machine holds 100 dimes / 10 = $10. Each machine therefore holds $20 in quarters + $10 in dimes = $30. So Erin must therefore have $90 total income / $30 income per machine = 3 machines. The answer is 3.

Q: Lisa has 36 candies. On Mondays and Wednesdays, she eats 2 candies for each day and on the other days of the week she eats 1 candy for each day. How many weeks does it take for Lisa to eat all of the candies?
A:
On Monday and Tuesday, she eats 2 * 2 = 4 candies. On the other days of the week, she eats 5 * 1 = 5 candies. In a week she eats 5 + 4 = 9 candies. So it takes 36 / 9 = 4 weeks for Lisa to eat all candies. The answer is 4.