Rafael will run at least 35 miles this week. So far, he has run 20 miles. What are the possible numbers of additional miles he will run?
Answer (2)
Answer: 15 miles or more
Explanation
x = number of additional miles Rafael could run
This is on top of the 20 miles he has run so far.
x+20 is the total number of miles he will run. This is at least 35 miles, so we write the inequality x+20 ≥ 35
That solves to x ≥ 15 after** subtracting 20 from both sides. **
Therefore, Rafael will run an additional 15 miles or more. He could run an additional 15 miles, 16 miles, 17 miles, and so on.
Rafael will need to run at least 15 additional miles this week to reach his goal of at least 35 miles in total. The possible numbers of additional miles he might run start from 15 and can be any number greater than 15. Therefore, he could run 15, 16, 17 miles or more.
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