1 Solving Problems Involving Elapsed Time Ronell finished encoding his report in English at 8:15pm. If he started at 7:20pm, how many minutes did he spent encoding ? TOTAL 30 Given: Time finish = 8:15pm Time start = 7:20pm Plan: Operation = Subtraction 215-7:20 = ? Solve: 8:15 - 7:20 Equivalent | HOUR = 60 mins. 7.75 - 7:20 0:55 Grade IV Cryst Merning/Alterne 12 3 18 3 Check time start-, 7:20 answer = 0:55 775 ↓ ·8:15 Answer: Ronell spent 55 minutes encoding.​