Kantabai bought 15 kg tea and 5 kg sugar from a shop. She paid * 50 as
return fare for rickshaw. Total expense was 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 * 880 for that. Find the rate of sugar and tea per kg.
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Answer:let the tea price be x and sugar price be y
Then
According to the first condition
15x + 5y = 650 - i
According to the second condition
2x + 7y = 880 - ii
Multiply eq i by 7 and ii by 5 and then subtract eq ii from i
Then sugar price = 127 approx
Tea price = 1.5 approx
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