12590 = (1-.20)x12590 = .8x(12590) / .8 = (.8x) / .815737.50 = x ■
Finding 20 per cent of a number is the same as multiplying the number by 0.2. In this instance, 0.2 x 12590 = 2518.
20 percent off leaves 80 percent on.0.8 x 12,590 = 10,072
12590 = 4/5 of original so original = 5 x 12590/4 = 15737.50
OK, do the following. 12590 = 80% (original prince - 20%) 12590 / 80 = 157,375 157,375 * 100 = 15737,5 The original price is 15737,5
Designate the original price as p. Then, from the problem statement, 80 % of p = 12590; p = 12590/0.80 = 15738. (If "20 percent" is considered to have only two significant digits, this should be written as "1.6 X 104 instead.)
20% = .20.20*1500 = 300
$62,950.00
20
140
2.6
80