Question
Two students appeared in an exam and one secured 12
marks more than the other. If marks of student who got more marks is 54% of the sum of the marks of both of them, then find the marks obtained by them.Solution
Let total marks obtained by both of them is x and y respectively. x – y = 12 And, x = 0.54 × (x + y) x = 0.54 × (12 + y + y) x = 0.54 × (12 + 2y) x = 6.48 + 1.08y 12 + y = 6.48 + 1.08y 0.08y = 5.52 y = 69 x = 69 + 12 = 81
What value should come in the place of (?) in the following number series?
15, 21, ?, 41.16, 57.624
168, 164, 155, 139, ?, 78
6, 30, 43, 58, 75, ?
- What will come in place of (?), in the given number series.
1, 4, 9, 16, ?, 36 What will come in place of the question mark (?) in the following series?
4000, ?, 320, 192, 153.6, 153.6
945, 1890, ?, 504, 144, 32
{(12√5 + 6√5 )} ×{(10√5 - 5√5 )} - 8² + 6² = ?
654, 647, 633, 612, 584, ?
120, 130, 145, 165, ?, 220
What will come in place of the question mark (?) in the following series?
45, 54, 72, ?, 126, 162