Ann takes 70 paces to walk 50 meter. number of paces ann take to walk 3.5 km

Meters to kilometers 1m=0.001km

70p - 50m

35p - 25m

7p - 5m

3.5p - 2.5m

so we convert our m's to km's 2.5m = 0.0025km so notice that were almost always 2 away from the p to m's so if we have 9p we have 7m therefore our answer 5.5p