[Question]If I'm 4 times older than Billy currently, and Billy is 4 years old, how old was I when Billy was born?
[Answer]I would currently be 4 * 4 = 16 years old, since I'm 4 times older than Billy's age of 4. Therefore, in order to find my age at Billy's birth we'd simply subtract Billy's age of 4 from my age, meaning I was 16 - 4 = 12 years old. The answer is 12.
Q: The novelty shop on the Starship Conundrum sells magazines and chocolates. The cost of four chocolate bars is equal to the cost of 8 magazines. If one magazine costs $1, how much does a dozen chocolate bars cost, in dollars?
A: If one magazine costs $1, then 8 magazines cost 8 * $1 = $8. Let's define "x" as the cost of one chocolate bar. The cost of four chocolate bars is equal to the cost of 8 magazines and 4 * x = $8. Dividing each side by 4, we get the cost of one chocolate bar x = $2. Therefore, a dozen chocolate bars would cost 12 * $2 = $24. The answer is 24.
Question: After trick-or-treating, Brent dumped his candy on the table. He had received 5 Kit-Kat bars, three times that amount in Hershey kisses, 8 boxes of Nerds, and 11 lollipops. He also had 10 Baby Ruths and half that amount in Reese Peanut butter cups. After giving his little sister 5 lollipops, how many pieces of candy did Brent have left?
Answer: He had 5 Kit - Kats and had 3 times that amount in Kisses so he had 5 * 3 = 15 Hershey kisses. He had 10 Baby Ruths and half that amount in Reese Peanut butter cups so he had 10 / 2 = 5 Reese Peanut Butter cups. He had 11 lollipops and gave 5 to his sister so he now had 11 - 5 = 6 lollipops. When you add up all of the candy, he had 5 Kit - Kats, 15 Hershey kisses, 10 Baby Ruths, 5 Reese cups, 8 Nerds and 6 lollipops so 5 + 15 + 10 + 5 + 8 + 6 = 49 pieces of candy. The answer is 49.
[Question]A frog lays 800 eggs a year. 10 percent dry up, and 70 percent are eaten. 1/4 of the remaining eggs end up hatching, how many frogs hatch out of the 800?
[Answer]Dried up:800(.10) = 80 eggs. 800(.70) = 560 eggs. Total left:800 - 80 - 560 = 160 eggs. 160 / 4 = 40 eggs survive to hatch. The answer is 40.
Q: Johny traveled South 40 miles, then turned East and traveled for 20 more miles than the distance he took to travel to the south. If he turned North and traveled twice the distance he had traveled to the East, calculate the total distance his journey took.
A: If the distance he took traveling to the East is 20 miles more than the distance he took to travel to the south, he took 40 + 20 = 60 miles traveling to the East. Johny's total distance traveling to the south and then to the East is 60 + 40 = 100 miles. The journey to the North was 2 * 60 = 120, twice the distance he took traveling to the East. The whole journey took 100 + 120 = 220 miles. The answer is 220.
Question: Emilia needs 42 cartons of berries to make a berry cobbler. She already has 2 cartons of strawberries and 7 cartons of blueberries in her cupboard. She decides to go to the supermarket to get more cartons. How many more cartons of berries should Emilia buy?
Answer:
She previously had 2 cartons + 7 cartons = 9 cartons of berries. Emilia needs to buy 42 cartons - 9 cartons = 33 cartons of berries. The answer is 33.