Question
Asked Nov 26, 2019
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Walking 4 mi in 2 h will use up 650 calories. Walking at the same rate, how many miles would a person need to walk to lose 1 lb? (Burning 3500 calories is equivalent to losing 1 pound.) Round to the nearest hundredth.
 _______mi

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Expert Answer

Step 1

Given,

Walking 4 mi in 2 h will use up 650 calories.

Step 2

Let x be the miles are needed to walk to lose 1 lb or 3500 calories.

Since the walking rate is same for both, consider the below proportion.

4
х
650 3500
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4 х 650 3500

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Step 3

Simplifying, ...

4
х
3500 650
4
.3500
650
х-
4
70
13
280
х 3D
13
x 21.53846
x 21.54(round to the nearest hundredth)
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4 х 3500 650 4 .3500 650 х- 4 70 13 280 х 3D 13 x 21.53846 x 21.54(round to the nearest hundredth)

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