Lucia is using energy at a rate of 210 kilocalories (kcal) per hour (h) ice skating. At what rate is Lucia using energy in calories per minute ( / min ) ?

Respuesta :

Answer:

3500cal/min

Step-by-step explanation:

You have 210kcal/h. There are 1000cal in 1kcal, and 60 minutes in 1 hour:

[tex] \frac{210}{1} \frac{kcal}{hour} \times \frac{1000}{1} \frac{cal}{kcal} \times \frac{1}{60} \frac{hour}{minutes} [/tex]

The units kcal cancel and hours cancel, leaving cal per min:

[tex] \frac{210 \times 1000}{60} \frac{cal}{minute} = 3500 \frac{cal}{min} [/tex]