The task is to generate the correct answer for a given math problem.

Q: Problem: the speed of a car is 85 km in the first hour and 45 km in the second hour . what is the average speed of the car ?

A: 65 kmph
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Q: Problem: if x = 1 + √ 2 , then what is the value of x 4 - 4 x 3 + 4 x 2 + 3 ?

A: 4
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Q: Problem: mark and ann together were allocated n boxes of cookies to sell for a club project . mark sold 11 boxes less than n and ann sold 2 boxes less than n . if mark and ann have each sold at least one box of cookies , but together they have sold less than n boxes , what is the value of n ?

A:
12
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