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December 20, 2014

December 20, 2014

Posted by **Anonymous** on Monday, October 15, 2012 at 10:52pm.

(a) Write an expression in terms of x, for the:

(i) Original price of each calculator;

(ii) Price of each calculator after the discount.

(b) Form an equation in x and hence determine the number of calculators the school bought.

(c) Calculate the offered to the school as a percentage.

- Algebra -
**Steve**, Tuesday, October 16, 2012 at 10:13amIf the price is p, and the discounted price is q

p = 16200/x

q = p-60 = 16200/x - 60

px = 16200

(p-60)(x+3) = 16200

(16200/x - 60)(x+3) = 16200

x = 27

so, p=600

check:

27 @ 600 = 16200

30 @ 540 = 16200

60 discount is 10%

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