Arthur D. answered 01/31/15
Tutor
5.0
(267)
Mathematics Tutor With a Master's Degree In Mathematics
$80 reduced by 25%
25%*$80=(1/4)*$80=$20 reduction
$80-$20=$60
the price is now $60 and must increase by $20 to get back to $80
$20 is what percent of $60 ?
20/60=1/3=...
0.33 1/3=33 1/3 %
_________
3l 1.00
9
___
10
9
____
1