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The Science Supply Store is having a sale. All graduated cylinders are 25% off. Mrs. Delmar buys four graduated cylinders that were originally $8.00 each and six that were originally $9.50 each. Show work

AHow much money will Mrs. Delmar save?
BWhat percent of the original price will Mrs. Delmar pay?
CSuppose the sales tax is 4%. What is Mrs. Delmat's total cost?

Verified Answer :

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Given:
Sales discount = 25%
Original price of 4 Graduated cylinder = $8
Original price of  6 graduated cylinder = $9.50

8 x 25% = 2 value of sales discount
2 x 4 = 8 sales discount on 4 cylinders.

9.50 x 25% = 2.38 value of sales discount
2.38 x 6 = 14.28 sales discount on 6 cylinders

a) 8 + 14.28 = $22.28 savings of Mrs. Delmar
b) 100% - 25% = 75% of the original price will be paid by Mrs. Delmar
c) 4 cylinders = 8 x 75% = 6 x 4 = 24
    6 cylinders = 9.50 x 75% = 7.13 x 6 = 42.78
total cost of cylinders = 24 + 42.78 = 66.78
sales tax = 66.78 x 4% = 2.67

Total payment = 66.78 + 2.67 = $69.45 Mrs. Delmar's total cost

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