Question
The marks obtained by A is 25% more than B, and the
marks obtained by C is 155 more than the difference of the marks obtained by A and B. If C obtained 220 marks, then find the marks obtained by A.Solution
Let the marks obtained by B be ‘x’. So, marks obtained by A = 1.25x According to question, (1.25x – x) + 155 = 220 0.25x = 220 - 155 0.25x = 65 x = 65/0.25 x = 260 Therefore, marks obtained by A = 1.25 × 260 = 325 marks
In each of the following questions the number series is given. One term of the series is denoted by x. You have to calculate of value of x and by using ...
17                          26                          37                   �...
21 11.5 13 ? 45.5 116.75
...25 13.5 12.5 20.75 39.5 ? 302.25
...94Â Â Â Â Â Â Â Â Â Â 282Â Â Â Â Â Â Â Â 284Â Â Â Â Â Â Â Â 852Â Â Â Â Â Â Â Â 856Â Â Â Â Â Â Â Â 2562
...6, 17, 21, 47, ?, 107
27   44    63    86   ?      146
6Â Â Â Â Â Â Â Â Â Â Â Â Â 7Â Â Â Â Â Â Â Â Â Â Â Â Â 15Â Â Â Â Â Â Â Â Â Â 46Â Â Â Â Â Â Â Â Â Â 185Â Â Â Â Â Â Â Â ?
...4 ? 113 449 1343 2681
...1600, 330, 48, 23.2, ?, 31.0464
