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tmua.me Medium Set B Paper 1 · Q2

Paper 1Geometry

A jug contains 900 mL900\,\mathrm{mL} of a drink made from concentrate and water in the volume ratio 1:41:4. The drink is mixed thoroughly, and 300 mL300\,\mathrm{mL} is poured out.

Water is then added to the jug until the volume ratio of concentrate to water is 1:91:9. Assume that volumes add when liquids are mixed.

How much water is added?

A480 mL480\,\mathrm{mL}
B540 mL540\,\mathrm{mL}
C600 mL600\,\mathrm{mL}
D900 mL900\,\mathrm{mL}
E1200 mL1200\,\mathrm{mL}

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