Respuesta :
Answer:
Charles expended a total of 2460 kilocalories during one week.
Step-by-step explanation:
To find the total number of kilocalories expended by Charles in one week, we need to calculate the kilocalories expended during swimming and walking separately, and then add them together.
Let's calculate the kilocalories expended during swimming first:
Kilocalories expended during swimming = (Swimming time) x (Calories expended per hour during swimming)
Kilocalories expended during swimming = 3.0 h x 340 kcal/h
Kilocalories expended during swimming = 1020 kcal
Next, let's calculate the kilocalories expended during walking:
Kilocalories expended during walking = (Walking time) x (Calories expended per hour during walking)
Kilocalories expended during walking = 9.0 h x 160 kcal/h
Kilocalories expended during walking = 1440 kcal
Finally, let's find the total kilocalories expended by adding the kilocalories expended during swimming and walking:
Total kilocalories expended = Kilocalories expended during swimming + Kilocalories expended during walking
Total kilocalories expended = 1020 kcal + 1440 kcal
Total kilocalories expended = 2460 kcal
Therefore, Charles expended a total of 2460 kilocalories during one week.
Final answer:
Charles expended a total of 2460 kcal for one week by swimming and walking.
Explanation:
To find the total number of kilocalories Charles expended for one week, we need to calculate the total number of kilocalories he expended while swimming and walking separately, and then add them together.
Charles swam for a total of 3.0 hours, expending 340 kcal per hour. Therefore, the total number of kilocalories he expended while swimming is 3.0 x 340 = 1020 kcal.
Charles walked for a total of 9.0 hours, expending 160 kcal per hour. Therefore, the total number of kilocalories he expended while walking is 9.0 x 160 = 1440 kcal.
Adding the calories expended while swimming and walking, Charles expended a total of 1020 + 1440 = 2460 kcal for one week.
