Answer:
B.
Step-by-step explanation:
I would write the first equation to better match the wording: three times d is 3d, and 290 less is (3d -290). That is said to be equal to t:
t = 3d -290
If 3d is subtracted from both sides of this equation, you get an equation that matches some of the answer choices:
t -3d = -290
The other equation is a straightforward expression of the difference in prices:
t -d = 240
These equation match choice B.
