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I Have Rs 1000 in Ten and Five Rupee Notes. If the Number of Ten Rupee Notes that I Have is Ten More than the Number of Five Rupee Notes, How Many Notes Do I Have in Each Denomination? - Mathematics

Numerical

I have Rs 1000 in ten and five rupee notes. If the number of ten rupee notes that I have is ten more than the number of five rupee notes, how many notes do I have in each denomination?

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Solution

Let the number of five - rupee notes be x .
Therefore, the number of ten - rupee notes will be (x + 10) .
Now, 
Value of five - rupee notes = Rs . 5x
Value of ten - rupee notes = Rs . 10(x + 10)
According to the question, 
5x + 10(x + 10) = 1000
or 15x = 1000 - 100
or \[x = \frac{900}{15} = 60\]
∴ Number of five - rupee notes = 60 . 
 Number of ten - rupee notes = 60 + 10 = 70 . 

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APPEARS IN

RD Sharma Class 8 Maths
Chapter 9 Linear Equation in One Variable
Exercise 9.4 | Q 15 | Page 30
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