This question was answered but not by finding a range?
If Jim and Mary jog 12 miles in a week. Is it reasonable that the jog 624 miles in a year. To solve problem need to estimate by finding a range.
Math - MathMate, Tuesday, January 8, 2013 at 9:39am
Approximate a year to 50 weeks, with 12 miles each week, it would be 600 miles a year. 624 is within 10% of 600 miles, so it is reasonable that they job 624 miles a year.