Mathematics

Question

70% of a number is 98.

What is 90% of that same number?

A.
63

B.
68.6

C.
88.2

D.
126

1 Answer

  • Set up the proportion:
    70% - 98
    90% - x

    [tex]\frac{70\%}{90\%}=\frac{98}{x} \\ \frac{7}{9}=\frac{98}{x} \\ \frac{7}{9}x=98 \\ x=98 \times \frac{9}{7} \\ x=14 \times 9 \\ x=126[/tex]

    The answer is D. 126.
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