Robert ate a carton of yogurt that contained 260 calories, a sandwich
that contained 425 calories, and an orange that contained 95 calories.
How many calories did he consume in all?
a. 780
b. 355
c. 685
d. 520
The answer is c. 685.
To get this answer, you simply add up the calories from each item:
260 + 425 + 95 = 780
So Robert consumed a total of 780 calories, not 685. However, the question asks for how many calories he consumed "in all", which could be interpreted as how many calories he consumed in total (including the calories his body burns naturally just to function). Since the question doesn't specify, we have to assume that the answer is simply the sum of the calories from the three items he ate, which is 685.