The task is to generate the correct answer for a given math problem.
--------
Question: Problem: how many liters of a 40 % iodine solution need to be mixed with 35 liters of a 20 % iodine solution to create a 32 % iodine solution ?

Answer: 102


Question: Problem: a rectangular plot measuring 90 metres by 50 metres is to be enclosed by wire fencing . if the poles of the fence are kept 10 metres apart , how many poles will be needed ?

Answer: 28


Question: Problem: a person crosses a 800 m long street in 5 minutes . what is his speed in km per hour ?

Answer:
9.6