7% = 100 7 = 0.07 x − t h e n u mb er 0.07 x = 6.3 ∣ d i v i d e b o t h s i d es b y 0.07 x = 0.07 6.3 x = 7 630 x = 90 ← an s w er
6.3 is 7% of 90. We found this by setting up the equation 0.07 x = 6.3 and isolating x . After solving the equation, we find that x = 90 .
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