Final answer:
The expression 25 - k + v evaluates to 15 when k is 20 and v is 10.
Step-by-step explanation:
The student is asking to evaluate an expression given specific values for variables.
The expression is 25 − k + v and the values provided are k = 20 and v = 10.
To solve this, we substitute the given values into the expression:
25 - 20 + 10 = 5 + 10 = 15.
Therefore, the value of the expression when k is 20 and v is 10 is 15.