Question

A runner burns 3.38×103kJ3.38×103kJ during a five-mile run. How many nutritional Calories did the runner burn?

Answer 1

To solve this question we have to use a conversion factor, we know that 1kJ=0.239Cal. Use this conversion factor to find the answer:

$3.38\times10^3kJ\cdot\frac{0.239Cal}{kJ}=807.82Cal=808Cal$

The correct answer is 808Cal.