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Total students = 50 Numbers of girsl = 50 × (76/100) = 38 Number of boys = 50 – 38 = 12 For easy calculation, Ratio of girls to boys = 38 : 12 = 19 : 6 Let number of boys 6 and number of girls 19, then Average weight of 6 boys = 62 kg Sum of weight of 6 boys = 62 × 6 = 372 Average weight of 19 girls = 58 kg Sum of weight of 19 girls = 58 × 19 = 1102 Total weight of 19 girls and 6 boys = 372 + 1102 = 1474 Average weight of 25 students = 1474/25 = 58.96
86 36 ? 7 7.5 0.75
800 400 600 1500 ? 23625
...Below given are 2 wrong number series.
Series I: 19, 30, 6, 45, – 11, 67
Series II: 141, 148, 223, 398, 723, 1248
I. The absolute...
22 39 58 81 ? 141
4 5 9 27 ? 723
...The following expressions form a series followed by a (?). Find the odd one out first and then find that what will come in place of the question mark (?...
2 5 16 65 326 ?
1 4 13 46 ? 976
...2120 1976 2097 1997 ? 2014
...16 9 ? 13.25 22.625 36.3125
...