Linear Equations in two variables

Asked by aruni_maiyer | 16th 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  | 17th May, 2010, 07:46: AM

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