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Mathematics, 05.05.2020 19:39 daemonacoster

1) John has 20 liters salt-water solution. It contains 30% salt. How much salt should he add to make it a 50% solution

2)A man spent 1/6 of his salary. Then he spent 3/7 of the rest. If he has 1600 liras more money in his wallet, then find the amount of his salary.

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