abbottonian91 abbottonian91

24-02-2018
Mathematics

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Sally Pays £25 for two tubes of paint a blue tube and a red tube. the blue tube cost £7 more than the red tube.
How much did each tube cost?

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susanwiederspan susanwiederspan

24-02-2018

Let's say the price of the red tube is x, and the price of the blue tube is x + 7. Then the total cost 25 is the price of the red tube plus that of the blue tube, or x + x + 7.

[tex]2x+7=25 \\ 2x =18 \\ x=9[/tex]

The red tube cost £9, and the blue tube cost £16.

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