If a pedestrian passes 60% of the total distance, he will have to walk 12.4 km. Find all the distance the pedestrian must travel.
| December 3, 2020 | education
12.4km-40% (100-60)
x km-100%
make up the proportion
40x = 1240
both sides can be divided by 10
4x = 124
transfer the number 4
x = 124: 4
x = 31
Answer: a pedestrian must pass 31 km in total
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