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How many kg of wheat costing Rs 9 per kg must be mixed with 33 kg of pulses costing Rs 23 per kg, so that a gain of 20% is made by selling the mixture at Rs 24 per kg?

1. How many kg of wheat costing Rs 9 per kg must be mixed with 33 kg of pulses costing Rs 23 per kg, so that a gain of 20% is made by selling the mixture at Rs 24 per kg?

 

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