Convert 0.81 to a fraction or simplest form

0.81 = 0.81 / 1

Numerator = 0.81 × 10 × 10 = 81
Denominator = 1 × 10 × 10 = 100

Numerator / Denominator = 81 / 100

Simplifying our fraction

= 81/100

= 81/100

Well in order to lose a pound you would have to burn 1,500 calories. the more calories you burn the more weight you lose. in order to lose 2 pounds you would have to run 4 hours and 28 minutes.