1 . | Answer : Option A | Explanation : | Central angle = (12 + 15 + 14) × $360\over100$=41x3.6=147.6º | | | 2 . | Answer : Option D | Explanation : | | | | 3 . | Answer : Option D | Explanation : | Ratio=$0.14x32000\over0.24x60000$=$14\over45$=14:45 | | | 4 . | Answer : Option B | Explanation : | Reqd % = $6000-5120\over5120$x100=17.1875≈17% | | | 5 . | Answer : Option B | Explanation : | | | | 6 . | Answer : Option D | Explanation : | Number of Female mobile users of LG brand in City c=40x$54\over100$=21.6thousand =21600 | | | 7 . | Answer : Option A | Explanation : | Average Samsung users = $345\over6$=57.5 Average LG users = $324\over6$=54 Hence, Difference = 57.5 – 54 = 3.5 thousand = 3500 | | | 8 . | Answer : Option D | Explanation : | Female Samsung users of A and B together = 32 × 0.45 + 72 × 0.42 = 14.4 + 30.24 = 44.64 thousand = 44640 Male LG users of C and D together = 40 × 0.46 + 40 × 0.61 = 18.4 + 24.4 = 42.8 thousand = 42800 Reqd%=$42800\over44640$x100=95.878%
| | | 9 . | Answer : Option B | Explanation : | Male users of Nokia in City E = 90× 0.45 = 40.5 Female users of Nokia in City F = 50 × 0.42 = 21 %=$(40.5-21)\over21$x100=92.857≈93% | | | 10 . | Answer : Option C | Explanation : | Total number of Male users of Nokia brand = 45 × 0.49 + 30 × 0.52 + 75 × 0.55 + 20 × 0.5 + 90 × 0.45 + 50 × 0.58 = 22.05 + 15.6 + 41.25 + 10 + 40.5 + 29 = 158.4 thousand = 158400 | | | |
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