Question: 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?
Answer with step-by-step thinking: 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.
So the answer is 3.


Question: If Patty's dress was $10 more than Ida's dress, and Ida's dress was $30 more than Jean's dress, and Jean's dress was $10 less than Pauline's dress, and lastly Pauline's dress was $30, how much did all the ladies spend on dressed put together?
Answer with step-by-step thinking: Jean's dress was $10 less than Pauline's $30 dress, meaning it was 30 - 10 = 20 dollars. Ida's dress was $30 more than Jean's $20 dress, meaning it was 30 + 20 = 50 dollars. Patty's dress was $10 more than Ida's $50 dress, meaning it was 50 + 10 = 60 dollars. Therefore, all four women together spent 60 + 50 + 20 + 30 = 160 dollars.
So the answer is 160.


Question: Mark wants to have a water balloon fight with his friends. He goes to the store to buy balloons and sees that they sell small bags for $4, medium bags for $6 and extra large bags for $12. He has $24 and wants to get the most balloons as possible. If the $4 bags contain 50 balloons, the $6 bags contain 75 balloons and the $12 bags contain 200 balloons, what is the greatest number of balloons he can buy?
Answer with step-by-step thinking:
He can buy 6 small bags because 24 / 4 = 6. These give him 300 balloons, because 6 x 50 = 300. He can buy 4 medium bags because 24 / 6 = 4. These give him 300 balloons because 4 x 75 = 300. He can buy 2 extra large bags because 24 / 12 = 2. This gives him 400 balloons because 2 x 200 = 400. 400 is the most he can buy because 400 is greater than 300.
So the answer is 400.