Lilly and Fiona are cleaning a room. Between them, it takes 8 hours to clean the room. A quarter of the time spent cleaning was by Lilly and Fiona was responsible for the rest of the cleaning. How long, in minutes, was Fiona cleaning?
Let's think: Lilly cleaned for 8 hours / 4 = 2 hours. This means that Fiona was cleaning for 8 hours total cleaning 2 hours Lilly's cleaning = 6 hours. So in minutes, Fiona was cleaning for 6 hours * 60 minutes in an hour = 360 minutes.. The answer is: 360.

Two trains left the station at the same time, but took different tracks to their destination. One took a track that was 200 miles long and it went 50 MPH. The other took the other track that was 240 miles long and it went 80 MPH. How much time did it take them on average? (Round to the nearest integer.)
Let's think: The first train took 5 hours because 200 / 40 = 5. The second train took 3 hours because because 240 / 80 = 3. The total time was 8 hours because 5 + 3 = 8. The average time was 4 hours because 8 / 2 = 4.. The answer is: 4.

Sally bought 3 photograph frames, each costing her $3. She paid with a $20 bill. How much change did she get?
Let's think: She bought the frames for 3 $3 = $9. Sally got $20 - $9 = $11 in change.. The answer is: 11.

Pauline is buying school supplies. The total amount of all the items she wants to buy add up to $150 before sales tax. Sales tax is 8% of the total amount purchased. How much will Pauline spend on all the items, including sales tax?
Let's think:
Sales tax is 8 / 100 x $150 = $12. Therefore, Pauline wil spend $150 + $12 = $162, including sales tax.. The answer is: 162.