Number System
If the numberator of a fraction is increased by 50% and denominator by 20% the fraction become 9/15. What was the original fraction ?

12/25
6/7
13/25
3/5

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Number System
If the sum of 4 consecutive odd numbers is 104, what will be the third number if they are arranged in ascending order ?

28
27
29
30

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Number System
A number consists of two digits whose sum is 8. If 18 is subtracted from the number, the place of digits get interchanged. Find the number.

32
35
46
53

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