WORKSHEET: ALGEBRA 3 - SOLUTION EXERCISE 5 |
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5) A kilogram of cherries costs twice as much a kilogramme of apples. If I have paid €15 for three kilos of cherries and four kilos of apples. How much is a kilogramme of apples? How much is a kilogramme of cherries? |
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x - price of one kilo of apples 2x - price of one kilo of cherries 3(2x) + 4x = 15 6x + 4x = 15 10x = 15 x = 15:10 x = 1.5 One kilo of apples costs 1.5€ One kilo of cherries costs 3€ |
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