From 7:00 AM to 11:00 AM it rained 2.25 inches. At 11:00 AM
the rain increased to fall at a rate of 1.25 in. every two
hours. How many inches of rain landed on the ground by 5:00 PM?
Answer
7 to 11 2.25
11 to 5 6hours 3*1.25=3.75
since it rained 1.25 for 2hours
2.25+3.75=6