Question: A sack of rice, which is 50 kilograms, costs $50. If David sells it for $1.20 per kilogram, how much will be his profit?
Answer: David's revenue for the 50 kilograms of rice is $1.20 x 50 = $60. So, his profit is $60 - $50 = $10. The answer is 10.
[Question]А Senior Center is hosting a bingo night. $2,400 in prize money will be given away. The first winner of the night will receive a third of the money. The next ten winners will each receive a 10th of the remaining amount. How many dollars will each of the next ten winners receive?
[Answer]The first winner will receive 2400 / 3 = $800. There will be 2400 - 800 = $1600 left. The other winners will receive 1600 / 10 = $160 each. The answer is 160.
Q: Helen cuts her lawn starting in March and finishes in October. Her lawn mower uses 2 gallons of gas every 4th time she cuts her lawn. For March, April, September and October, she only cuts her law 2 times per month. In May, June, July and August, she has to cut her lawn 4 times per month. How many gallons of gas will she need to cut her lawn from March through October?
A: For March, April, September and October, she cuts her lawn 2 a month. There are 4 months so she cuts her yard 2 * 4 = 8 times. For May, June, July and August, she cuts her lawn 4 times a month. There are 4 months so she cuts her yard 4 * 4 = 16 times. During the entire 8 month period, she cuts her lawn 8 + 16 = 24 times. Every 4th time she cuts, she needs 2 gallons of gas. If she cuts her lawn 24 times a year then she needs to fill up 24 / 4 = 6 times. Each time she fills up, it takes 2 gallons of gas so 2 * 6 = 12 gallons of gas per year. The answer is 12.
Question: It takes 5 people to lift a car and twice as many people to lift a truck. How many people are needed to lift 6 cars and 3 trucks?
Answer: It takes 5 x 2 = 10 people to lift a truck. 5 x 6 = 30 people are needed to lift the cars. 10 x 3 = 30 people are needed to lift the trucks. Altogether, 30 + 30 = 60 people are needed. The answer is 60.
[Question]Dan spent $32 buying a new backpack, 1 pack of pens, 1 pack of pencils and 5 multi-subject notebooks for school. If the backpack costs $15 and both the pens and pencils cost $1.00 each, how much did each notebook cost?
[Answer]The pens and pencils were $1.00 each so 2 * 1 = $2.00. The back pack cost $15 and the pens / pencils cost $2.00 so 15 + 2 = $17.00. His total spent was $32 and he has already spend $17 so 32 - 17 = $15.00. That means he has $15 left to spend on 5 notebooks so the cost would be 15 / 5 = $3.00 each. The answer is 3.
[Question]A man owned 1/2 of a lot. He sold 1/10 of his share for the amount of $460. What is the worth of the entire lot?
[Answer]
If 1 / 10 of the man's lot is equal to $460, then the man's land is worth $460 x 10 = $4600. Since 1 / 2 of the whole lot is worth $4600, then the whole lot is worth $4600 x 2 = $9200. The answer is 9200.