Question

ERGENT!!!!!!!!!!!: A runner eats a snack with 375 Calories of nutritional energy. After her snack, she burns 3,160 kJ while running. [1 Calorie = 4.184 kJ] Which of the following statements is TRUE? (Select ALL that apply) *

A. There were 3,140 kJ of energy in the snack.
B. There were 1,570 kJ of energy in the snack.
C. During her run, she used 755 Calories of energy.
D. During her run, she used 189 Calories of energy.
E. The runner used fewer Calories while running than she consumed during her snack.
F. The runner used more Calories while running than she consumed during her snack.

Answer 1

B. There were 1,570 kJ of energy in the snack.

C. During her run, she used 755 Calories of energy.

F. The runner used more Calories while running than she consumed during her snack.

Step-by-step explanation:

According to this question, a runner eats a snack with 375 Calories of nutritional energy. After her snack, she burns 3,160 kJ while running.

Since 1 Calorie = 4.184 kJ, it means that the runner consumed 375 × 4.184 = 1570 kJ of energy. In other words, THERE WERE 1,570 kJ OF ENERGY IN THE SNACK.

Also, the runner burns 3,160 kJ while running meaning that she equivalently burnt 3160/4.184 = 755.258 calories. Approximately, 755 calories of energy were burnt by the runner while running.

In a nutshell, the runner consumed 375 calories of energy in her snack but used up 755 calories while running. This means that the runner used more Calories while running than she consumed during her snack.