Final answer:
By dividing the total calories in the box by the number of servings, we find that each serving of the wheat crackers contains 70 calories.
Step-by-step explanation:
To find the number of calories in one serving of the wheat crackers, we need to divide the total calories in the box by the number of servings. Given that a box of wheat crackers has a total of 420 calories and contains 6 servings, we calculate the calories per serving as follows:
Divide 420 calories by 6 servings to find the calories in one serving.
420 calories รท 6 servings = 70 calories per serving.
Therefore, each serving of the wheat crackers contains 70 calories.