Question: Rodney and Todd are rowing down a river that is 50 yards wide at one end. If the river's width increases from this end uniformly by 2 yards every 10 meters along, and they row along the river at a rate of 5 m/s, how long (in seconds) will it take them to get to the point where the river is 80 yards wide?
Answer: The difference in width between where they're starting from and their destination is 80 - 50 = 30 yards. The width increases 2 yards every 10 m along the river so they would have to cover (30 / 2) * 10 = 150 meters. Traveling at the rate of 5m / s, he will spend 150 / 5 = 30 seconds. The answer is 30.
[Question]If Janet reads 80 pages a day and Belinda reads 30 pages a day, how many more pages does Janet read in 6 weeks?
[Answer]First find the total number of days in 6 weeks: 6 weeks * 7 days / week = 42 days. Then find the total difference in the number of pages Janet and Belinda read each day: 80 pages / day - 30 pages / day = 50 pages / day. Then multiply the daily difference by the number of days to find the total difference in the number of pages they read: 50 pages / day * 42 days = 2100 pages. The answer is 2100.
Q: Sally and Bob have made plans to go on a trip at the end of the year. They both decide to work as babysitters and save half of what they've earned for their trip. If Sally makes $6 per day and Bob makes $4 per day, how much money will they both have saved for their trip after a year?
A: Saly saves 1 / 2 * $6 / day = $3 / day. Since each year have 365 days, the total amount of money Sally will save in a year is $3 / day * 365 days / year = $1095 / year. Bob saves 1 / 2 * $4 / day = $2 / day. The total amount of money Bob will have saved in a year is $2 / day * 365 days / year = $730 / year. In total, Sally and Bob would have saved $730 + $1095 = $1825. The answer is 1825.
Question: If Amanda can run the length of a football field 2000 meters in length in 2 hours, how long would it take her to run the length of a 10000-meter track at the same speed?
Answer: Running the length of a football field 2000 meters in 2 hours is a speed of 2000 / 2 = 1000 meters per hour. At the same speed, Amanda will run the length of a 10000 - meter track in 10000 / 1000 = 10 hours. The answer is 10.
[Question]Jacob loves to build things. In Jacob's toy bin there are 18 red blocks. There are 7 more yellow blocks than red blocks. There are also 14 more blue blocks than red blocks. How many blocks are there in all?
[Answer]The number of yellow blocks is 18 blocks + 7 blocks = 25 blocks. The number of blue blocks is 18 blocks + 14 blocks = 32 blocks. The total number of red, yellow, and blue blocks is 18 blocks + 25 blocks + 32 blocks = 75 blocks. The answer is 75.
[Question]Mara and Riley went to a carnival, Mara rode the bumper car two times, Riley rode the space shuttle four times, and they both rode the Ferris wheel three times. If a ticket for a bumper car cost $2, a ticket for a space shuttle cost $4, and a ticket for a Ferris wheel cost $5, how much money did they spend?
[Answer]
Mara spent $2 x 2 = $4 for riding the bumper car two times. Riley spent $4 x 4 = $16 for riding the space shuttle 4 times. They spent $5 x 3 = $15 each riding the Ferris wheel 3 times. So, they spent a total of $15 x 2 = $30 riding the Ferris wheel. Therefore the total amount they spent at the carnival is $4 + $16 + $30 = $50. The answer is 50.