Question
If the numerator of a fraction is increased by 160% and
the denominator of the fraction is increased by 280%, the resultant fraction is 39/61 . What is the original fraction?ÂSolution
Let the original fraction be x/y So x*(160+100)%/{y*(280+100)%} = 39/61 260x/380y = 39/61 x/y = 39/61 × (38/26) = 57/61        Â
12, 12, 30, 120, ?, 4620
30, 43, 58, 75, 94, ?
12, 33, 45, 78, 123, 201, ?
Find the missing number, in the given number series.
25, 30, 40, 57, ?, 120
500, 250, 750, 375, 1125, 562.5, ?
- What will come in place of (?), in the given number series.
2, 5, 10, 17, ?, 37 32   33    29   38    ?      47    11
...Find the missing number in the given number series.
2, 7, 19, 62, ?, 1270Â
66, 17, 81, ?, 100, -21Â
37, 49, 63, ?, 97, 117