Question
In an examination the average marks of Rohit is 60. If
he got 19 more marks in science and 26 more marks in maths then his average would have been 65. Find the total number of subjects he studied?Solution
Let total number of subjects be x. Then, => (60x + 26 + 19)/x = 65 => 60x + 26 + 19 = 65x => 5x = 45 => x = 9
More Average Questions
12, 34, 64, ?, 140, 182
196, 196, 203, 229, 292, ?
80, 116, 52, ?, 8, 204
150 - 10 × ( 7 - 2)/4 × 8 = ?
...Choose the missing term.
3F, 6G, 11I, 18L,?
What will come in place of the question mark (?) in the following series?
112, 124, 138, 154, ?, 196
100 180 294 448 648 ?
15, 23, 30, 36, 41, ?
188    178    158   ?     88    38
32   48   96   ?   720   2520
