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21 is 70% of what number?
What is 20% of 90
In Florida, sales tax is 6% of the total bill amount. How much sales tax would be charged in Florida for a bill totaling $110?

Respuesta :

20% of 90 is 18. Try to turn 20% into a fraction it helps solve it. 

bcalle
(21/x)=(70/100)
2100=70x
30=x

20% of 90=
.2 * 90=
1.80

110*6%=
110* .06=
$6.60

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