Q: Rodney is a door-to-door salesman trying to sell home security systems. He gets a commission of $25 for each system he sells. He is canvassing a neighborhood of four streets with eight houses each. The first street gave him half the sales that the second street did, while every house on the third street turned him away and the fourth street resulted in only one sale. His total commission was $175. How many security systems did he sell on the second street?
A: Let S be the number of systems Rodney sold on the first street. He sold 2S systems on the second street. Based on his commission, he sold 175 / 25 = 7 systems. In all, he sold S + 2S + 0 + 1 = 3S + 1 = 7 systems. On the first and second streets, he sold 3S = 7 - 1 = 6 systems. Thus, on the first street he sold S = 6 / 3 = 2 systems. On the second street, Rodney sold 2 * 2 = 4 security systems. The answer is 4.
Question: John invests in a bank and gets 10% simple interest. He invests $1000. How much money does he have after 3 years?
Answer: He gets 1000 * .1 = $100 a year. So after 3 years, he gets 100 * 3 = $300. So he has 300 + 1000 = $1300. The answer is 1300.
[Question]A busy restaurant is counting how many customers they had during that Friday to try to predict how many they might get on Saturday. During breakfast, they had 73 customers. During lunch, they had 127 customers. During dinner, they had 87 customers. If they predict they'll get twice the amount of customers on Saturday as they had on Friday, how many customers do they predict they will get?
[Answer]On Friday the restaurant had 73 customers for breakfast + 127 customers for lunch + 87 customers for dinner = 287 customers total on Friday. If they predict getting 2x the amount of customers on Saturday as on Friday, they will have 287 customers x 2 = 574 customers on Saturday. The answer is 574.
Q: The world record for longest fingernails is 26 inches. Sandy, who just turned 12 this month, has a goal for tying the record. Her fingernails are 2 inches long. Her fingernails grow at a rate of one-tenth of an inch per month. How old will she be when she achieves the world record?
A: Sandy's fingernails will grow a total of ( 0.1 ) * 12 = 1.2 inches per year. To achieve the world record, Sandy needs to grow her fingernails a total of 26 - 2 = 24 inches. It will take her a total of 24 / 1.2 = 20 years. Sandy will be 12 + 20 = 32 years old when she achieves the world record. The answer is 32.
Question: Neeley bought a loaf of bread from the store and sliced it into 12 pieces. His family ate a third of the bread slices for breakfast. Then Neeley used 2 bread slices to make a sandwich for lunch. How many slices of bread remain?
Answer: For breakfast, the family ate 12 / 3 = 4 slices of bread. After breakfast, the family has 12 - 4 = 8 slices of bread remaining. After Neeley's lunch, there are 8 - 2 = 6 slices of bread remaining. The answer is 6.
Q: An airplane was flying from California to Virginia. The flight started with 124 passengers. They made a layover in Texas. 58 passengers got off and 24 got on. From there, they flew to North Carolina, where 47 people got off and 14 got on, before flying to Virginia. There were also a total of 10 crew members on board for the entire flight. How many people landed in Virginia?
A:
They started with 124 passengers. 58 got off and 24 got on so 124 - 58 + 24 = 90. 90 people flew to NC where 47 passengers got off and 14 got on. This flight now had 90 - 47 + 14 = 57. There were also 10 crew members so 57 + 10 = 67 passengers landed in Virginia. The answer is 67.