Math Help!
posted by Callie .
1.Find the percent of decrease. Round your answer to the nearest tenth of a percent where necessary.
75 to 60
A. 20%
B. 30%***
C. 40%
D. 50%
2. Find the percent markup. Round to the nearest whole percent.
Store's cost: $100.00
Selling Price: $160.00
A. 50%
B. 60%***
C. 70%
D. 80%
3. Find the sale price. Round the nearest cent.
Regular price:$57.63
Percent of discount:10%
A. $63.39
B. $5.76
C. $51.87
D. $57.53***
4. Find the sale price. Round to the nearest cent.
Regular Price: $56.00
Percent discount: 40%
A. $50.00***
B. $22.40
C. $40.00
D. $33.60
My answers
1.B
2.B
3.D
4.A

1. (60/75)*100% = 80 %.
80%  100% = 20% = 20% Decrease.
2. (160/100)*100% = 160%
160%  100% = 60% Increase.
3. %Cost = 100%  10% = 90%
Cost = 0.90 * 57.63 = $51.87
4. Same procedure as #3.
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