Question
Find the average of five numbers a, b, c, d and e such
that b = 20, and a is 20% more than that of ‘b’. ‘c’ is 10 less than ‘a’. The ratio of ‘c’ to ‘d’ is 1:3, respectively, and ‘e’ is 5 less than ‘b’.Solution
According to the question,
a = 1.20 × 20 = 24
c = 24 – 10 = 14
d = 14 × 3 = 42
e = 20 – 5 = 15
Required average = (24 + 14 + 42 + 15 + 20)/5 = 115/5 = 23
More Average Questions
114, 134, 174, 254, 414, ?Â
10, 20, 60, 300, ?, 23100
What will come in place of the question mark (?) in the following series?
17, 138, 307, 532, ?, 1182
6848 + 9215 – 7295 - ? = 5945 – 3244
12, 24, 46, 78, 120, ?
What will come in place of the question mark (?) in the following series?
121, 110, 97, ?, 61, 38
32, 42, 62, 92, ?, 182
418, 406, 430, 382, 478, ?, 670
11          20          ?             64          112        192
...250, 279, 311, 349, 396, ?
