01-04-2015
Mathematics

Answered

70% of a number is 98.

What is 90% of that same number?

A.

63

B.

68.6

C.

88.2

D.

126

Verified Answer :

01-04-2015

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

\(\frac{70\%}{90\%}=\frac{98}{x} \\ \frac{7}{9}=\frac{98}{x} \\ \frac{7}{9}x=98 \\ x=98 \times \frac{9}{7} \\ x=14 \times 9 \\ x=126\)

The answer is D. 126.

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