The ratio of students of three classes is 2:3:4. If 12 students are increased in each classes then their ratio turns into 8:11:14. What was the total number of students in all the three classes originally ?
A) 162 B) 108 C) 96 D) 54
The ratio of milk and water in 729 litre mixture is 7:2. To obtain a mixture in which the ratio of milk and water is 7:3, what will be the amount of extra water to be added in new mixture?
A) 81 litre B) 71 litre C) 56 litre D) 50 litre
AnswerA) 81 litre
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