Answer:
80
Explanation:
There are several ways you can solve this.
Write a proportion
60/100 = 48/x . . . . . . where x represents the number surveyed
60x = 4800 . . . . . . . . "cross multiply" or multiply by 100x
4800/60 = x = 80 . . . . divide by the coefficient of x
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Write a math version of the problem statement
60% of those questioned is 48
0.60 · x = 48
48/0.60 = x = 80 . . . . . divide by the coefficient of x
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Think about the numbers
60% = 6·10%
48 = 6·8
so, 10% of those questioned = 8 people. Multiplying by 10 gives
100% of those questioned = 80 people
(Of course, you know that 100% is all of them.)