Answer:
B. 104
Step-by-step explanation:
Since the problem gives an initial ratio of 48 out of 72, color to total photographs, we can set up a proportion, or equivalent ratios to solve for the amount of color film in 156 photographs:
[tex]\frac{color}{total}=\frac{48}{72}=\frac{x}{156}[/tex]
cross-multiply: 72x = (48)(156) or 72x = 7488
divide and solve: 72x/72 = 7488/72
x = 104 color film photographs
