Sonu buys 40 kg of wheat at rupees 12.50 per kg and 30 kg of wheat at Rs 14 per kg at what rate per kg should he sell the mixture to gain 5% on the whole
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cp of 40 kg wheat= 40× 12.50=500
cp if 30 kg wheat= 30×14=420
total cp = 420 +500=920
sp = 100 + p%/100 ×cp
sp= 100+5/100 × 920
105/100 ×920=966
sp of 70kg= 966
sp of 1 kg= 966/70 =13.8
cp if 30 kg wheat= 30×14=420
total cp = 420 +500=920
sp = 100 + p%/100 ×cp
sp= 100+5/100 × 920
105/100 ×920=966
sp of 70kg= 966
sp of 1 kg= 966/70 =13.8
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