[Question]Gina chooses what she and her sister will watch on Netflix three times as often as her sister does. If her sister watches a total of 24 shows on Netflix per week, and each show is 50 minutes long, how many minutes of Netflix does Gina get to choose?
[Answer]Let g be the number of shows Gina chooses and s be the number her sister chooses. We know that g = 3s and g + s = 24. Substituting the first equation into the second equation, we get 3s + s = 24. Combining like terms, we get 4s = 24. Dividing both sides by 4, we get s = 6. Substituting this value back into g = 3s, we get g = 3 * 6 = 18. Then multiply the number of shows by the length of each show in minutes to find the total number of minutes Gina chooses: 18 shows * 50 minutes / show = 900 minutes. The answer is 900.
Q: Bob orders a dozen muffins a day for $0.75 each and sells them for $1.5 each. How much profit does he make a week?
A: He buys them for 12 * .75 = $9. He sells them for 12 * 1.5 = $18. So he makes 18 - 9 = $9 per day. That means he makes 9 * 7 = $63 per week. The answer is 63.
Question: A store marks a book 30% above the cost. But during a sale, a 10% discount was given. If the book costs $50, what is the percent profit?
Answer: The store made a $50 x 30 / 100 = $15 profit for selling it 30% above the cost. So, the book was sold for $50 + $15 = $65. During a sale, the book’s selling price decreased by $65 x 10 / 100 = $6.50. So, the book was sold for $65 - $6.50 = $58.50. There was $58.50 - $50 = $8.50 profit after the discount. Therefore, the percent profit is $8.50 / $50 x 100% = 17%. The answer is 17.
[Question]A mailman has to deliver 48 pieces of junk mail. There are 8 houses on the block. 2 of the houses have white mailboxes and 3 have red mailboxes. How many pieces of junk mail will each of those houses get?
[Answer]The mailman has 48 pieces of junk mail / 8 houses = 6 pieces per house. The houses with white mailboxes get 2 * 6 pieces = 12 pieces of junk mail. The houses with red mailboxes get 3 * 6 pieces = 18 pieces of junk mail. The houses with red and white mailboxes will get a total of 12 + 18 = 30 pieces of junk mail. 30 / 5 = 6 pieces of junk mail each. The answer is 6.
Q: A pharmacy is buying enough tubs for them to make their prescriptions this week. They already have 20 tubs left in storage but they need a total of 100 tubs for the week. Of the tubs they still need to buy, they buy a quarter from a new vendor then decide to go to their usual vendor for the rest. How many tubs is the pharmacy going to buy from the usual vendor?
A: They already have 20 tubs in storage, so they only need to buy 100 needed tubs - 20 tubs in storage = 80 tubs. From the new vendor, they buy 80 tubs / 4 = 20 tubs. They now have a total of 20 + 20 = 40 tubs. They are therefore going to buy 100 needed tubs - 40 owned tubs = 60 tubs from the usual vendor. The answer is 60.
Question: Matt orders 15 pounds of beef. He cuts that into 12-ounce steaks. How many steaks does he get?
Answer:
He buys 15 * 16 = 240 ounces of steak. That means he buys 240 / 12 = 20 steaks. The answer is 20.