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?
Mathematics · Middle School · Wed Jan 13 2021
Answered on
Given the questions:
a. 21 is 70% of what number?
b. What is 20% of 90?
c. In Florida, If the sales tax is 6% of the total bill amount. How much sales tax would be charged in Florida for a bill totaling $110?
Solution:
Simply convert first the percentages to decimals before proceeding with the solutions.In converting a percentage into decimal, divide the percentage by 100, hence in converting a decimal to percentage, multiply the percentage by 100.
a. 21 is 70% of what number?
= 70/100
= 0.7
=21/0.7
= 30
21 is 70% of 30.
b. What is 20% of 90.
= 20 /100
= 0.2
=(90)(0.2)
= 18
20% of 90 is 18
c. In Florida, If the sales tax is 6% of the total bill amount. How much sales tax would be charged in Florida for a bill totaling $110?
= 6/100
=0.06
=(110)(0.06)
= $6.6
$6.6 would be charge for a bill totalling $110.