They are incorrect because when going from percent to decimal, you divide the percent by 100 and when going from decimal to percent you multiply the decimal by 100. So in the case of 14.5%... divide 14.5% by 100 to get .145. The correct decimal is .145 not 14.5.
20*5= 100
375+100=475
475/5= 95
Therefore the original price of a sweater is $95
Answer: 
Step-by-step explanation:
Group like terms:

Simplify the arithmetic:

Add 7 to both sides:

Simplify the arithmetic:

Simplify the arithmetic:

Divide both sides by 3:

Simplify the fraction:

Find the greatest common factor of the numerator and denominator:

Factor out and cancel the greatest common factor and the answer will be:
