johnah runs 3/5 mile on a sunday and 7/10 mileon monday he uses the monday to find the total that he ran a total pf 1 mile. what mistake does johnah make

The mistake Jonah makes is assuming that he ran the same distance on Sunday and Monday. However, 3/5 mile and 7/10 mile are not equal distances, and therefore using Monday's distance alone to reach a total of 1 mile would not be accurate. He would need to calculate the total distance he ran by adding the Sunday and Monday distances together, then adjust accordingly to reach a total of 1 mile.