Monu earns a five-digit salary in rupees every month. The first digit ...
Understanding Monu's Salary Digits
To find Monu's five-digit salary in rupees, we need to break down the clues provided about each digit in the salary.
Clue Analysis
- The first digit is equal to the second digit.
- The second digit is twice the third digit.
- The third digit is three-fourths of the fourth digit.
- The fourth digit is equal to the fifth digit.
Defining Variables
Let’s define each digit:
- Let the first digit be x.
- Then, the second digit is also x.
- The third digit can be defined as y.
- The fourth digit can be defined as z.
- The fifth digit is also z.
Setting Up Equations
From the clues, we can set up the following equations:
1. x = x (first digit = second digit)
2. x = 2y (second digit = twice the third digit)
3. y = (3/4)z (third digit = three-fourths of the fourth digit)
4. z = z (fourth digit = fifth digit)
Finding Values
- From equation 2, we express y in terms of x:
\( y = \frac{x}{2} \)
- Substitute y into equation 3:
\( \frac{x}{2} = \frac{3}{4}z \)
Rearranging gives:
\( z = \frac{2x}{3} \)
- Since z is also the fifth digit, we can express all digits in terms of x.
Finding Valid Digits
Since x, y, and z must be single digits (0-9):
- The values must be integers.
- Possible values for x are 0, 2, 4, 6, 8 (as they must be even).
After testing valid combinations, we find:
If \( x = 6 \):
- y = 3
- z = 4
Thus, Monu's salary is 66344.
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