70. A shopkeeper purchases two varieties of rice, the price of the second kind being
50% more than that of the first. He mixes the rice and sells the mixture for Rs
27.84 per kg and earns a profit of 16%. If the ratio of the first to the second is 3
2 in the mixture, find the purchasing price of the costlier variety of rice.
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Answer:
Step-by-step explanation:
Let 8 kg of first variety of rice and 5 kg of second variety is mixed.
Therefore, Cost price of 13 kg of rice
= Rs. (8×32+5×80)
= Rs.(256 + 400)
= Rs.656
S.P. of 13 kg of rice
= 72×13
= Rs.936
Gain = 936 - 656 = Rs.280
Gain per cent = 280656×100
= 43%
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