To reproduce an old photograph, a photographer charges x dollars to make a negative, 3x/5 dollars for each of the first 10 prints, and x/5 dollars for each print in excess of 10 prints. If $45 is the total charge to make a negative and 20 prints from an old photograph, what is the value of x?
a. 3
b. 3.5
c. 4
d. 4.5
e. 5
Answer is ‘e’
x=5
E.5
thanks for correcting the question.
45= x +(3x/5)10 + (x/5)10
= x = 6x + 2x
x= 5
5
x = 5
ans: e
x+(3x/5)10+(x/5)10=45
x+6x+2x=45
9x=45
x=5
5