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The trick to choosing the correct ratio for a conversion problem is to set it up so that the units that you do not want will get cancelled out, leaving the units that you do want. To do this, multiply by a fraction that has the units you want in the numerator and the units you want to get rid of in the denominator. Make sure that the numerator equals the denominator. If they are equal, the fraction is equal to one, and multiplying something by one does not change it.

Since we're getting rid of minutes and looking for hours, we want to multiply by (1 hr / 60 min), which is the same as dividing by 60 minutes per hour (60 min/hr).

6.1 min ÷ 60 min/hr ≈ 0.102 hr

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11y ago
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Q: Choose the ratio that you would use to convert 6.1 minutes to hours?
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