To reproduce an old photograph, a studio charges Tk. z to make anegative, Tk. 0.6z for each of the first 10 prints, and Tk. 0.2z. for each print in excess of 10 prints. If Tk. 45 is the total charge to make one nagative and 20 prints from an old photograph then what is the value of z?
Created: 5 years ago |
Updated: 3 years ago
best des
Let 1st cost (C1) = z
C2 = .6z×10 = 6z
C3 = .2z×10 = 2z
Totat cost = c1 + c2 + c3 = 9z
ATQ
9z = 45
z = 45/9 = 5
Ans. 5
Md Azizur Rahman
Founder of Satt
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