Question

PLEASE HELP
Suppose you paid $88 for a pair of shoes that has been discounted 20%. What was the original price of the shoes before the discount?

Answer 1

@jim_thompson5910 @dtan5457

Answer 2

to reduce a number by 20% multiply it by \(100\%-20\%=80\%=0.8\)

Answer 3

first it says i have to identify my unknown variable

Answer 4

so you know that \(0.8\times P=88\) solve for \(P\) by dividing

Answer 5

i made \(P\) the original price, you can choose any variable you like
that is the unknown, the original price

Answer 6

okay, one second, sorry i had to swat a fly, haha

Answer 7

dividing what?

Answer 8

you have 80% of the original prices is $88 so \[0.8P=88\] solve this for \(P\) by dividing both sides by \(0.8\)to get \(P\) by itself

Answer 9

could you solve \[2x=8\]?

Answer 10

btw it is not a matter of "remembering" you are not born knowing this
it is a matter of learning how to do it

Answer 11

4

Answer 12

and thanks

Answer 13

yes because if \[2x=8\] then \[x=8\div 2=4\]

Answer 14

yes

Answer 15

you have something similar \[0.8P=88\]

Answer 16

that makes \[P=88\div 0.8\]

Answer 17

110?

Answer 18

which you can compute easily enough without a calculator, but real easy with one (calculators are made for decimals)

Answer 19

yes

Answer 20

the check is easy
\(20\%\) of \(110\) is \(22\) and \(110-22=88\)

Answer 21

okay, thank you so much!

Answer 22

yw
not so bad was it?

Answer 23

not entirely! thanks again

Answer 24

got more?

Answer 25

not yet

Answer 26

whew

Answer 27

haha