CBSE Class 10 Answered
Linear Equations in two variables
Asked by aruni_maiyer | 16 May, 2010, 03:48: PM
Expert Answer
Let X and Y be the actual price of tea and lemon respectively.
Then,
0.15Y - 0.05X = 7
0.05X + 0.10Y = 13
or equivalently,
15Y - 5X = 700
5X + 10Y = 1300
Adding these two, we find Y = 80.
Hence X = 100.
The actual price of tea is Rs 100 and lemon is Rs 80.
Regards,
Team,
TopperLearning.
Answered by | 17 May, 2010, 07:46: AM
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