Six percents

6% of the base is 21. How much is 28% of this base?

Correct answer:

x =  98

Step-by-step explanation:

$$\begin{gathered} 0.06z=21 \\ 0.06\cdot z=21 \\ 0.06z=21 \\ z=350 \\ x=0.28\cdot z=0.28\cdot 350=98 \end{gathered}$$

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