[Question]A bus has a capacity of 200 people. If it carried 3/4 of its capacity on its first trip from city A to city B and 4/5 of its capacity on its return trip, calculate the total number of people the bus carried on the two trips?
[Answer]From city A to city B, the bus carried 3 / 4 * 200 = 150 passengers. On the return trip, the bus carried 4 / 5 * 200 = 160 passengers. In total, the bus carried 160 + 150 = 310 passengers. The answer is 310.
Q: Betty has 20 books, and her sister has 1/4 times more books than Betty. What's the total number of books the two have?
A: Betty's sister has 1 / 4 * 20 books = 5 more books. The total number of books Betty's sister has is 20 books + 5 books = 25 books. The total number of books the two have is 25 books + 20 books = 45 books. The answer is 45.
Question: Jerry needs to shingle 3 roofs. Each roof is made of two slanted rectangular sides measuring 20 feet by 40 feet. If he needs 8 shingles to cover one square foot of roof, how many shingles does he need total?
Answer: First find the area of one side of a roof: 20 feet * 40 feet = 800 square feet. Then multiply that number by 2 to find the total area of both sides of the roof: 800 square feet / side * 2 sides = 1600 square feet. Then multiply that number by the number of roofs to find the total area of all the roofs: 1600 square feet / roof * 3 roofs = 4800 square feet. Then multiply the total area of the roofs by the number of shingles needed per square foot to find the total number of shingles needed: 4800 square feet * 8 singles / square foot = 38400 shingles. The answer is 38400.
[Question]John builds a model rocket that can travel 500 ft in the air. He builds a second rocket that can travel twice as high. What is the combined height of the two rockets?
[Answer]The second rocket goes 500 * 2 = 1000 feet. So the total height is 500 + 1000 = 1500 feet. The answer is 1500.
Q: Sam shared a sum of money between his three cousins Sandra, Amy and Ruth in the ratio 2:1:3 respectively. If Amy got $50, how much did Sandra get?
A: Going by the ratio, for every 1 part that Amy gets, Sandra will get 2 parts. Since Amy got $50, Sandra will get 2 * $50 = $100. The answer is 100.
Question: A cobbler can mend 3 pairs of shoes in an hour. From Monday to Thursday, the cobbler works for 8 hours each day, and on Friday, he only works from 8am to 11am. How many pairs of shoes can the cobbler mend in a week?
Answer:
From Monday to Thursday, the cobbler can mend 3 x 8 = 24 pairs of shoes a day. From Monday to Thursday, he can mend 24 x 4 = 96 pairs of shoes. On Friday, he works for 11 - 8 = 3 hours. On Friday, he can mend 3 x 3 = 9 pairs of shoes. In a week, he can mend 96 + 9 = 105 pairs of shoes. The answer is 105.