The number of students in 3 classes is in the ratio 2:3:4. If 12 students are increased in each class this ratio changes to 8:11:14. The total number of students in the three classes in the beginning was

A box has 210 coins of denominations one-rupee and fifty paise only. The ratio of their respective values is 13:11. The number of one-rupee coin is

If 2/3 of A=75% of B=0.6 of C, then A:B:C is

If A and B are in the ratio 3:4, and B and C in the ratio 12:13, then A and C will be in the ratio

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