A few days ago
Can someone explain to me how to do these problems?
Find the total price of eacth item.
Software: 39.50$
sales tax 6.5%
State whether each percent of change is a percent of increase or perecent of decrease. Then find each percent of change. Round to the nearest whole percent
original 132: new:150
and orignal: 40
new 32.5
Top 1 Answers
A few days ago
Favorite Answer
A percentage k% is equal to the fraction k/100.
The sales tax is:
$(39.50 * 6.5 / 100)
= $2.57.
If the new price is higher than the old one, that is an increase. If it is less, that is a decrease. The following equation will give a positive result for an increase, but a negative result for a decrease.
The percentage change is:
(New price – old price) * 100 / old price.
(152 – 130) * 100 / 130
= +16.92%
= 16.92% increase.
(32.5 – 40) * 100 / 40
= -18.75%
= 18.75% decrease.
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