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Question: 17 ellen borrowed 500 from a credit union at 12...

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17, Ellen borrowed $500 from a credit union at 12% simple interest and another S250 in cash what single rate on S750 results in the same with her credit card at 18% simple interest, amount of total interest? 18. To make a special mix for Valentines Day, the owner of a candy store wants to combine chocolate hearts that sell for $5 per pound with candy kisses that sell for $3.50 per pound. Write and solve a system of equations to find how many pounds of each kind yield 30 pounds of a mix that sells for $4.50 per pound. 19. Solve for r: PR (r + 20. A landscaper wants to put a cement walk of uniform width around a rectangular garden that measures 24 by 40 feet. She has enough cement to cover 740 square feet. To the nearest tenth of a foot, how wide should the walk be to use up all the cement? Hint: see Example 9 in section 1.7
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