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Mathematics, 15.07.2019 19:00 kokokakahi

Abag has red and white counters in the ratio 4: 7. if i add 4 white counters the ratio becomes 1: 2. work out the number of red counters in the bag.

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Abag has red and white counters in the ratio 4: 7. if i add 4 white counters the ratio becomes 1: 2....
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