Question
Bella scored 20% marks in a test and failed by 75 marks,
whereas Tara scored 40% marks in the same test and failed by 25 marks. Find the passing marks of the test.Solution
ATQ, Let the maximum marks be 100m. Marks scored by Bella = 20% of 100m = 0.2×100m=20m. So, Passing marks = 20m+75 ------------- (I) Marks scored by Tara = 40% of 100m = 0.4×100m=40m. So, Passing marks = 40m+25 -------------- (II) Comparing equation (I) and (II): 20m+75=40m+25 40m−20m=75−25 m=2.5 Put the value of m=2.5 in equation (I), Passing marks=(20×2.5)+75=125
24, 168, 28, 140, 35, ?
What will come in place of the question mark (?) in the following series?
24, 25, 34, 59, 108, 189, ?
124, 107, 91, ? , 62, 49
What will come in place of the question mark (?) in the following series?
16, ?, 480, 1920, 5760, 11520Determine the value of [(P/10)2 - 21]
3, 5, 12, 38, 154, ?
What will come in place of the question mark (?) in the following series?
2, 5, 14, 41, 122, 365, ?
66, 17, 81, ?, 100, -21
1236, 1445, 1675, 1933, 2226, ?
324 972 486 1458 729 ?
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