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20-12-2017
Mathematics

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in a piggy bank is a sum of money amounting to $3.70 it consists of all dimes and quarters if there are 19 coins at all write a system of equations to describe the situation

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kmswong kmswong

20-12-2017

x * 0.1 + y * 0.25 = 3.7
x + y = 19

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