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12 February, 20:29

Keri walks her dog every morning. The length of the walk is 0.55 kilometer on each weekday. On each weekend day the walk is 1.4 times as long as a walk on a weekday. How many kilometers does Keri walk in one week?

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  1. 12 February, 20:42
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    0.55 is close to 0.5 which equals 1/2, and 1.4 is close to 1.5 which is 1 and 1/2. Keri walks 0.5 * 5 + 0.75 * 2 = 2.5 + 1.5 = 4 km per week.

    so Keri walks 4 km in one week
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