Question

Liberal Arts Math

Answer 1

from your data I can calculate, total befor tax, as:
\[3.45+8.95+5.50+5.95=23.85$\]
now in order to calculate the tax percentage p, keep in mind that the subsequent condition has to be checked:

Answer 2

\[23.85+\left( \frac{ p }{ 100 } \right)*23.85=25.52\]
so?

Answer 3

What's P/100

Answer 4

p/100 is the tax percentage, expressed in %

Answer 5

Okay so how do I add it

Answer 6

please, you have to calculate p, from the preceding equation

Answer 7

please subtract 23.85 from both sides of the above equation

Answer 8

1.67

Answer 9

for example left side is:
\[23.85+\left( \frac{ p }{ 100 } \right)*23.85-23.85=\frac{ p }{ 100 }*23.85\]

Answer 10

right side is 1.67, ok!
now, please equate my left side to your right side

Answer 11

you should get this
\[\frac{ p }{ 100 }*23.85=1.67\]

Answer 12

do you agree?

Answer 13

Okay

Answer 14

ok! Now, please multiply both sides of the above equation by 100

Answer 15

p/100 x 2385 = 167

Answer 16

please note that:
\[\frac{ p }{ 100 }*23.85 *100=p*23.85\]
because 100/100=1

Answer 17

so? please retry!

Answer 18

right side is 167 ok!

Answer 19

Okay!

Answer 20

please write the equation you have got

Answer 21

167 x 23.85

Answer 22

I think no, noite that, our equation is:
\[p*23.85=167\]
so please you have to divide both sides of the above equation by 23.85

Answer 23

what is p?

Answer 24

\[\frac{ p*23.85 }{ 23.85 }=\frac{ 167 }{ 23.85 }\]

Answer 25

solve it @CaseyCarns

Answer 26

7%

Answer 27

well done!

Answer 28

thanks! @CaseyCarns @MARC_

Answer 29

credits to u too! @Michele_Laino