Q: Ali has a store that sells fruits and vegetables. He puts 23 kg of kidney apples, 37 kg of golden apples and 14 kg of Canada apples on the shelves. By noon, 36 kg of apples were sold. What is the mass of apples that he has left?
A: You first have to calculate the total mass of apples he had on the shelves, so you add the three kinds of apples: 23 kg + 37 kg + 14 kg = 74kg. Since he sold 36 kg of apples, he still has: 74 kg 36 kg = 38kg. The answer is 38.
Question: Sally had 14 fries at lunch. Her friend Mark gave her one-third of his 36 fries at lunch. How many fries did Sally have for lunch after that?
Answer: Mark gave Sally 36 / 3 = 12 fries. After that Sally has 14 + 12 = 26 fries. The answer is 26.
[Question]Dennis lives two floors above Charlie. Charlie lives on a floor whose number is 1/4 Frank's floor number. Frank lives on the 16th floor. What floor does Dennis live on?
[Answer]First find Charlie's floor number by dividing Frank's floor number by 4: 16 / 4 = 4. Then add 2 to find Dennis' floor number: 4 + 2 = 6. The answer is 6.
Q: Trace has five shopping bags that weigh the same amount as Gordon's two shopping bags. One of Gordon's shopping bags weighs three pounds and the other weighs seven. Trace's shopping bags all weigh the same amount. How many pounds does one of Trace's bags weigh?
A: Gordon's bags weigh 3 + 7 = 10 pounds. Trace's five bags all weigh the same amount, so each bag weighs 10 / 5 = 2 pounds. The answer is 2.
Question: Winston had 10 gallons of gas in his car's gas tank. He drives to the store and uses 6 gallons of gas. Then he drives to the doctor's office and uses 2 gallons of gas. If the tank can hold up to 12 gallons of gas, how many gallons of gas will Winston need to refill the entire tank?
Answer: After driving to the store and doctor's office, Winston has 10 - 6 - 2 = 2 gallons of gas left in the tank. To refill the entire tank, Winston needs 12 - 2 = 10 gallons of gas. The answer is 10.
Q: Together Felipe and Emilio needed a combined time of 7.5 years to build their homes. Felipe finished in half the time of Emilio. How many months did it take Felipe to build his house?
A:
Let F = the number of years Felipe needed to build his house. Emilio = 2F. 3F = 7.5 years. F = 2.5 years. 2.5 years = 30 months. It took Felipe 30 months to build his house. The answer is 30.