Kantabai bought 1 and half kg tea and 5 kg sugar from a shop. She paid Rs 50 as
return fare for rickshaw. Total expense was Rs 700. Then she realised that by ordering online the goods can be bought with free home delivery at the same price. So next month she placed the order online for 2 kg tea and 7 kg sugar. She paid Rs 880 for that. Find the rate of sugar and tea per kg.
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(3/2)x + 5y = 650 ∴ 3x + 10y = 1300
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