# Math Problems of the Week - May 26, 2024 to June 1, 2024

May 26, 2024 | West Covina

Lower Elementary:

Question: Joel takes a train from Rockville Centre to Montauk. The train is scheduled to leave Rockville Centre at 1:30 PM and arrive in Montauk at 4:45PM. If the train leaves on time and the trip takes 3 hours and 22 minutes, then how late or early is Joel when he reaches Montauk?

Solution: From 1:30 Pm to 4:30 PM is a 3-hour difference, and from 4:30 PM to 4:45 Pm is a 15-minute difference. So, the trip from Rockville Centre to Montauk is scheduled to take 3 hours and 15 minutes. Since 22-15=7, we know that 3 hours and 22 minutes is 7 minutes longer than the trip was scheduled to take. So, Joel reaches Montauk 7 minutes late.

Upper Elementary:

Question:Stan is running a computer program to scan all the memory on a computer. When the program is ¾ done with its scan, it has 12 minutes left to run. How long does it take the computer program to scan the computer in total?

Solution: If the program is done scanning ¾ of the computer’s memory, then it has ¼ left. Since we know that it takes 12 minutes to scan ¼ of the memory, it takes 12 × 4 = 48 minutes to scan the whole thing.

Middle School:

Question: Mary is mailing a number of cassette tapes. She buys a large roll of bubble wrap for \$12 and a large box of envelopes for \$8 to package the tapes - enough for however many tapes she ships. It costs \$2.50 to ship each one. Write an expression to represent the total cost to ship all the tapes in terms of T, the number of tapes Mary ships.