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CBSE Class 9 Answered

Ram invested some amount at 6% simple interest and some amount at 9% simple interest. At the end of the year, he earned Rs.1200 as interest on the two amounts. Write  a linear equation in two variables to represent the above statement.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
answered-by-expert Expert Answer

Let the amount invested at 6% simple interest be Rs.x and that invested at 9% simple interest be Rs.y.

Thus, interest earned at the end of first year on Rs.x = 6% of Rs.x = Rs.
Similarly, interest earned at the end of first year on Rs.y = 9% of Rs.y = Rs.
Thus, total amount earned as interest , which equals Rs.1200
Thus, the given information can be represented as a linear equation as:
Answered by | 04 Jun, 2014, 03:23: PM

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