A person wants to buy 6 kg of tomatoes and 7 kg of potatoes, which together would cost Rs. 190. In the…
Tomatoes cost Rs. 20 per kg. If their price is t and the potato price is p, then 6t + 7p = 190 and 8t + p = 170. Substituting p = 170 - 8t gives 6t + 1190 - 56t = 190, so t…
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A person wants to buy 6 kg of tomatoes and 7 kg of potatoes, which together would cost Rs. 190. In the market as tomatoes were very good, then he decides to buy 2 kg more tomatoes and 6 kg less potatoes and spent only Rs. 170. Then the price of 1 kg of tomatoes is
Answer and explanation
Correct answer C
Tomatoes cost Rs. 20 per kg. If their price is t and the potato price is p, then 6t + 7p = 190 and 8t + p = 170. Substituting p = 170 - 8t gives 6t + 1190 - 56t = 190, so t = 20.
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