[Question]Jim starts with $80 in his investment portfolio. After 1 year it grows by 15%. He then adds another $28 to his portfolio. After 1 more year the combined portfolio grows by 10%. What is his final portfolio worth after 2 years from when he started?
[Answer]After 1 year Jim has gained $80 * 0.15 = $12. Therefore, after 1 year his portfolio has grown to $80 + $12 = $92. He then adds $28 to this total, so his new portfolio total is $92 + $28 = $120 at the beginning of year 2. Next, this total grows by 10%, so he gains $120 * 0.10 = $12 across year 2. Thus, after year 2, his portfolio is worth $120 + $12 = $132. The answer is 132.
Q: Mark made a chalkboard that is 3 feet wide. It is 2 times as long as it is wide. What is the area of the chalkboard?
A: The length of the chalkboard is 2 x the width of 3 feet = 6 feet. We can calculate area by multiplying the width and the length, so 3 feet x 6 feet = 18 feet. The answer is 18.
Question: Tom uses 10 weight plates each weighing 30 pounds on an exercise machine. This exercise machine uses special technology to make the weights 20% heavier on the lowering portion. How heavy did the weights feel when being lowered?
Answer: The weight stack weighed 10 * 30 = 300 pounds. So the added weight made it 300 * .2 = 60 pounds heavier. So when he lowered the weight it was 300 + 60 = 360 pounds. The answer is 360.
[Question]On a particular week, Fatima's restaurant served 25 people food and drinks, and 3/5 of that number came to buy coffee. How many people did not buy coffee in the restaurant?
[Answer]The number of customers who were served coffee in the restaurant is 3 / 5 * 25 = 15. If the total number of customers who came to the restaurant was 25, then 25 - 15 = 10 customers did not buy coffee. The answer is 10.
Q: Eddie is 92 years old. His granddaughter Becky is currently four times younger than he is. The mother of Becky - Irene, is two times her age. How old is Irene?
A: Becky is four times younger than Eddie, which means she is 92 / 4 = 23 years old. Her mother is two times older than she, so it means Irene is 23 * 2 = 46 years old. The answer is 46.
Question: Marta sells tomatoes in a grocery store. On Friday, a shipment of 1000 kg of tomatoes arrived at the store. On Saturday, Marta sold a total of 300 kg of tomatoes to customers. On Sunday, the store was closed, causing 200 kg of tomatoes to rot and to be thrown away. On Monday morning another shipment arrived, twice the size of the first one. How many kilograms of tomatoes did Marta have ready for sale on Tuesday?
Answer:
Marta had 1000 kg of tomatoes on Friday and sold 300 kg on Saturday, so she has 1000 – 300 = 700 kg of tomatoes left. On Sunday 200 kg of tomatoes had to be thrown away, so 700 – 200 = 500 kg of tomatoes were left. The shipment on Monday was twice the size of the first one, so it was 2 * 1000 = 2000 kg of tomatoes. The total amount of tomatoes ready for sale on Tuesday was 500 + 2000 = 2500 kg. The answer is 2500.