Vicky bought 3 1/2 pounds of oranges. Each pound cost 3.90. Which of the following equations represents the total cost,c, Vicky paid for the oranges and the amount of money she spent

A. C/3.90=3.5; Vicky paid 1.11
B. C/3.5=3.90; Vicky paid 13.65.
C. 3.90c=3.5; Vicky paid 0.90.
D. 3.90/3.5=c; Vicky paid 13.65.

The correct equation would be B. C/3.5=3.90; Vicky paid 13.65.

To find the total cost, we divide the total weight of oranges (3 1/2 pounds) by the cost per pound (3.90). The equation should express the total cost C divided by the cost per pound (3.5) equals the cost per pound (3.90).

Therefore, C/3.5 = 3.90.

Solving for C, we have C = 3.5 * 3.90 = 13.65.

This means Vicky paid 13.65 for the oranges.