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

Problem: a number x is mistakenly divided by 10 instead of being multiplied by 10 . what is the percentage error in the result ?
- 99 %

Problem: a train running at the speed of 70 km / hr crosses a pole in 9 sec . what is the length of the train ?
175 m

Problem: if a mixture is 2 ⁄ 7 alcohol by volume and 3 ⁄ 7 water by volume , what is the ratio of the volume of alcohol to the volume of water in this mixture ?

2 / 3