Question: Leila and her friends want to rent a car for their one-day trip that is 150 kilometers long each way. The first option for a car rental costs $50 a day, excluding gasoline. The second option costs $90 a day including gasoline. A liter of gasoline can cover 15 kilometers and costs $0.90 per liter. Their car rental will need to carry them to and from their destination. How much will they save if they will choose the first option rather than the second one?
Answer with step-by-step thinking: Leila and her friends will travel a total distance of 150 x 2 = 300 kilometers back - and - forth. They will need 300 / 15 = 20 liters of gasoline for this trip. So, they will pay $0.90 x 20 = $18 for the gasoline. Thus, the first option will costs them $50 + $18 = $68. Therefore, they can save $90 - $68 = $22 if they choose the first option.
So the answer is 22.


Question: Parker went to the gym and found 4 twenty pounds dumbbells set up for weightlifting. He added two more dumbbells to the setup and started his exercises. How many pounds of dumbbells is Parker using for his exercises?
Answer with step-by-step thinking: 4 twenty - pound dumbbells weigh 4 * 20 = 80 pounds. When Parker added two more dumbbells to the setup, he increased the weight by 2 * 20 = 40 pounds. The dumbbells that Parker used to do his exercise weigh a total of 40 + 80 = 120 pounds.
So the answer is 120.


Question: A computer factory produces 1500 computers per day. They sell each computer for $150. If they sold 1 week's worth of production, how much money will the company earn?
Answer with step-by-step thinking:
One week has 7 days. The number of computers produced in 1 week is 1500 * 7 = 10500 computers. The total amount earned selling 1 week of production is 10500 * 150 = $1575000.
So the answer is 1575000.