Answer :
-- 6 laps around the neighborhood = 1 mile
-- Each lap = 1/6 of a mile.
-- 5/6 of a mile requires 5 laps.
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Using a proportion:
('L' laps) / (5/6 mile) = (6 laps) / (1 mile)
Cross-multiply the proportion:
L lap-mile = (6) x (5/6) lap-mile
Divide each side by mile :
L lap = (6) x (5/6) lap = 5 lap
-- Each lap = 1/6 of a mile.
-- 5/6 of a mile requires 5 laps.
==========================================
Using a proportion:
('L' laps) / (5/6 mile) = (6 laps) / (1 mile)
Cross-multiply the proportion:
L lap-mile = (6) x (5/6) lap-mile
Divide each side by mile :
L lap = (6) x (5/6) lap = 5 lap
the answer would be 5 laps because 1 miles= 6 laps and she needs to run 1 less then that.
