Answer:
.9p
Step-by-step explanation:
The discount is the original price times 10%
p* .10= .1p
Subtract this from the original price
p - .10p
The new price is .9p
As far as i know you should go for LCM that would be more convenient and easy to do
1 and -8
30
Thank you! I hope you have a good day :)