Division x=81/3 that’s right
You haven't included enough information for the question, but assuming that a and b are the same then a is 4 and b is 4
If it was a 75% discount, then u r actually paying 25%
so....25% of the original price is $ 11
0.25x = 11
x = 11 / 0.25
x = 44 <=== the original price
