Number System
The difference between 71% of a number and 46% and of the same number is 212. What is 75% of that number

673
636
724
845

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Number System
The peresent age of the father and the son are in the ratio of 8:3. After 12 years the ratio of their ages will be 2:1. What is the sum of the present age of the father and the son ?

67 years
69 years
68 years
66 years

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