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How many kg of cashews costing Rs 15 per kg must be mixed with 15 kg of sugar costing Rs 35 per kg, so that a gain of 50% is made by selling the mixture at Rs 45 per kg?

1. How many kg of cashews costing Rs 15 per kg must be mixed with 15 kg of sugar costing Rs 35 per kg, so that a gain of 50% is made by selling the mixture at Rs 45 per kg?

 

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