Question

You bought $15.25 worth of merchandise from a convenience store, but the final bill was $16.50. What is the sales tax rate? 6.3% 6.7% 8.2% 8.0% 7.6% The height of a giant redwood tree is 160 feet, and the height of an oak tree is 120 feet. Taking the height of the redwood tree as the base value, the percentage change in height from the redwood tree to the oak tree is: -25.00% -16.67% -14.27% 40.00% -12.50%

Answer 1

Answer:

sales tax = 8.2 %

base value  = 25%  increase

Explanation:

given data

bought = $15.25

final bill = $16.50

to find out

the sales tax rate

solution

we take tax rate and divide by original price tat is

take rate is = 16.50 - 15.25 = $1.25

so

sales tax = $\frac{1.25}{15.25}$

sales tax = 8.1967 %

so correct option is 8.2%

and

we consider height of Redwood tree =  x feet

and  height of Oak tree = y feet

so that difference in height of two trees  are  = change in height from Oak tree to Redwood tree is

difference in height of two trees = | x - y |

so that % change height Oak tree to Redwood tree

thus % change height from Oak tree to Redwood tree taking

so that  

Oak tree as base value will be

base value = $\frac{(x-y)}{b}$ × 100

base value  = $\frac{(120 -150) }{120}$ × 100

base value  = 25%  increase