[Question]Grayson drives a motorboat for 1 hour at 25 mph and then 0.5 hours for 20 mph. Rudy rows in his rowboat for 3 hours at 10 mph. How much farther, in miles, does Grayson go in his motorboat compared to Rudy?
[Answer]Grayson first travels 1 * 25 = 25 miles. Then Grayson travels 0.5 * 20 = 10 miles. Grayson travels a total of 25 + 10 = 35 miles. Rudy travels 3 * 10 = 30 miles. Grayson travels 35 - 30 = 5 miles more than Rudy. The answer is 5.
Q: Roy has 2 blue pens. He has twice as many black and 2 less than twice as many red than black pens. How many pens does Roy have in all?
A: Roy has 2 x 2 = 4 black pens. Twice the number of black pens is 4 x 2 = 8. So, there are 8 - 2 = 6 red pens. Therefore, Roy has 2 + 6 + 4 = 12 pens in all. The answer is 12.
Question: A city has a population of 300,000. 50,000 people immigrate to the country and then 30,000 people leave. After that 1/8 of the population gets pregnant and 1/4 of those people have twins. How many people are there after the births?
Answer: There was a net immigration to the country of 50,000 - 30,000 = 20,000. So the total number of people before birth is 300,000 + 20,000 = 320,000. That means 320,000 / 8 = 40,000 get pregnant. So 40,000 / 4 = 10,000 have twins. So that means they have 10,000 * 2 = 20,000 children. There are 40,000 - 10,000 = 30,000 children from single births. So the total number of people is 320,000 + 30,000 + 20,000 = 370,000. The answer is 370000.
[Question]Pat's Pool Supply has three times as many swimming pools as Pat's Ark & Athletic Wear store. If Pat's Ark & Athletic Wear store has 200 pools, how many pools do they have in total?
[Answer]Since Pat's Ark & Athletic Wear store has 200 pools, Pat's Pool Supply has 3 * 200 = 600 swimming pools. Together, they have 600 + 200 = 800 swimming pools. The answer is 800.
Q: Dulce's father has eight orange trees on his farm. If each tree has 200 fruits and Dulce picks 2/5 of the oranges from each tree, calculate the total number of fruits remaining in all the trees.
A: The total number of oranges in all the trees before Dulce picked any is 8 trees * 200 oranges / tree = 1600 oranges. If each orange tree has 200 oranges, and Dulce picks 2 / 5 of each tree's oranges, she picks 2 / 5 * 200 oranges = 80 oranges. Since the total number of orange trees is eight, Dulce picked 8 trees * 80 oranges / tree = 640 oranges from all the trees. After picking 640 oranges from the trees, the total number of oranges remaining became 1600 oranges - 640 oranges = 960 oranges. The answer is 960.
Question: Robert, a sales agent, earns a basic salary of $1250 per month and, 10% commission on his monthly sales. Last month, his total sales were $23600. He allocated 20% of his total earnings to savings and the rest of the money to his monthly expenses. How much were his monthly expenses last month?
Answer:
Robert earned a commission of $23600 x 10 / 100 = $2360. So, he earned a total of $1250 + $2360 = $3610. And, he saved $3610 x 20 / 100 = $722. Therefore, his total expenses last month was $3610 - $722 = $2888. The answer is 2888.