Question
The marks obtained by X and Y in a quiz are in the ratio
7:5 respectively. If Y had scored 5 more marks, then the marks scored by X would be 30% more than that of Y. What is the difference between actual marks scored by X and Y?Solution
Let's take X's marks are 7x and Y's marks are 5x, If Y had scored 5 more marks, Y's new marks would be 5x + 5. According to the question, X's marks (7x) would be 30% more than Y's new marks (5x + 5): 7x = 1.3(5x + 5) 7x = 6.5x + 7.5 0.5x = 7.5 x = 15 Now, we can find X's and Y's actual marks: X's marks = 7x = 7(15) = 105 Y's marks = 5x = 5(15) = 75 The difference between their actual marks = 105 - 75 = 30
70, 69, 73, 64,80, 55, ?
- 8, 12, 18, 27, ?
56, 27, 14.5, 6.25, ?, 1.0625
6, 7, 15, 46, 185, ?
What will come in place of the question mark (?) in the following series?
60, 110, 224, 463, ?, 1716
9 28 83 250 ? 2248
- What will come in place of the question mark (?) in the following series?
2, 5, 16, 47, 138, ? What will come in place of the question mark (?) in the following series?
12, 13, 27, ?, 329, 1646
17    18      14       ?      7       32
...74, 84, 64, 104, ?, 184
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