The cost of 15kg coffee is Rs.183 and the cost of 25kg tea and 13kg coffee is Rs.213.what will be the cost of 7kg tea and 1kg coffee?
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let the cost of 1 kg of coffee be x and tea be y
15x=183
x=12.2
13x+25y=213
13×12.2+25x=213
25x=213-158.6
x=54.4/25
x=2.176
7 kg of tea=7× 2.176
₹2.176
1 kg of coffee=12.2× 1
₹12.2
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