Question

Every day Jin reads for 0.75 hours in the morning and 1.25 hours in the evening. He uses the expression 0.75d+1.25d to keep track of the number of hours he has read for any number of days, d. If Jin reads for 20 days, how many hours has he read?

Answer 1

Answer: 40 hours.

Step-by-step explanation: You can combine the like terms 0.75d and 1.25d to make 2d. 2 hours times 20 days is 40 hours.