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

Q: Problem: mixture contains alcohol and water in the ratio 4 : 3 . if 5 liters of water is added to the mixture , the ratio becomes 4 : 5 . find the quantity of alcohol in the given mixture .

A: 10
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Q: Problem: which number can we add to 425897 to get a number exactly divisible by 456 ?

A: 7
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Q: Problem: there are 6 people in the elevator . their average weight is 152 lbs . another person enters the elevator , and increases the average weight to 151 lbs . what is the weight of the 7 th person .

A:
145
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