Making Predictions from Samples Question 1

The results of a random sample of 1,000 people are recorded in Table 1. Use this data to answer the questions that follow.

Table 1

people who wear corrective lenses	762
people who wear glasses	638
people who wear contact lenses	124

I only need answer D-F but if you could just give all for me to make sure it would be great. Or just answer part A and part D with explanation and I can do the rest myself

Part A

What percentage of Americans would you predict wear corrective lenses?

Part B

What percentage of Americans would you predict wear glasses?

Part C

What percentage of Americans would you predict wear contact lenses?

Part D

There are about 320 million people living in the United States. Of these, how many would you predict wear corrective lenses?

Part E

Of the 320 million people in the United States, how many would you predict wear glasses?

Part F

How many of the 320 million people in the United States would you predict wear contact lenses?