Of the people in a certain survey 58 percent were at most 40 years old and 70 percent were at most 60 years old. If 252 of the people in the survey were more than 40 years old and at most 60 years old, what was the total number of people in the survey?
1,900, 2,100, 2,400, 2,700, 3,000
2 Explanations
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Abhinav Shahu
58% people <= 40 years old -->> 42% people > 40 years old
70% people <= 60 years old
So 40 years old < % people <= 60 years old
= 70 - 42 = 28%
2 Explanations