The price of a shoe was decreased by 22%. If the new price is $27.3. what is the original price.
A
$62.30
B
$42.30
C
$72.00
D
$35.00
Verified Correct Answer: D.
Step-by-Step Mathematical Solution
Let x = original price
A decrease of 22% = (100-22)% = 78% of the original price.
78% of x = 27.30
= \(\frac{78x}{100} = 27.30\)
78x = 2730
then, x = \(\frac{2730}{78}\)
x = 35
Therefore, the original price of the shoe was $35.00.
Source: WAEC / JAMB / NECO Classroom Archive (Record #69166)