Answer: The value of t is 262.50 pounds.
Explanation:
Since we have given that

here, t = total profit in pounds
n = number of items sold
p = price of the item
c = cost of the item
Since we have
n = 35
p = 10
c = 2.50
So, we put all the above values in the given equation:

Hence, the value of t is 262.50 pounds.