Question

Jonathan decides that he is going to start eating healthier and stop drinking soda. His first week of doing so he loses 3.4 lbs. The second week he did not do as well and gained 1.2 pounds. The third week he loses another 2.9 lbs. How much weight did Jonathan lose in all?

a. 1.7 lbs
b. 4.5 lbs
c. 5.1 lbs
d. 7.5 lbs

Answer 1

By summing the weight Jonathan lost and subtracting the weight he gained, we find that he lost a total of 5.1 lbs over three weeks. Hence, the correct answer is c. 5.1 lbs.

Step-by-step explanation:

Weight Loss Calculation

To determine the total weight Jonathan lost, we need to sum up the weight lost and gained over the three weeks. In the first week, Jonathan lost 3.4 lbs. However, in the second week, he gained 1.2 lbs, which we subtract from the previous loss. In the third week, he lost another 2.9 lbs. By adding the losses and subtracting the gains, we calculate the total weight loss.

3.4 lbs (week 1 loss) - 1.2 lbs (week 2 gain) + 2.9 lbs (week 3 loss) = 5.1 lbs lost in total.

Therefore, the correct answer is c. 5.1 lbs.