Question

One serving of Gooey Gushers provides 12% of the daily value of vitamin C. Tim ate 312 servings of Gooey Gushers.

a. Calculate 312⋅12% without using a calculator. Show your work.

b. What question about the Gooey Gushers can you answer by calculating 312⋅12%?

Answer 1

a) Given expression,

12% of 312

Since 100% of 312 = 312

⇒ 10% of 312 = 31.2,

⇒ 1% = 3.12

⇒ 2% = 2 × 3.12 = 6.24

So, 12% of 312 = 10% of 312 + 2% of 312

= 31.2 + 6.24

= 37.44

b) Given,

Total number of servings = 312,

The percentage of vitamin C in each serving = 12%,

Thus, the total amount of the vitamin C in 312 servings = 12% of 312

`=(12* 312)/(100)`

`=(3744)/(100)`

= 37.44,

Hence, the question can be asked about the total amount of the vitamin C.