To reproduce an old photograph, a studio change Tk. z to make a negative Tk. 0.6z for each of the fist 10 points and Tk. 0.2z for each print in excess of 10 prints. If Tk. 45 is the total change to make one negative and 20 prints from an old photograph then what is the value of z? <br>

1. To reproduce an old photograph, a studio change Tk. z to make a negative Tk. 0.6z for each of the fist 10 points and Tk. 0.2z for each print in excess of 10 prints. If Tk. 45 is the total change to make one negative and 20 prints from an old photograph then what is the value of z?

[DBBL Probationary Officer-2011 : 2011]

1. Tk. 3

2. Tk. 4

3. Tk. 4.5

4. Tk. 5

5. None of these

Answer

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