Question
The total strength of school A is 20% more than that of
school B. In school A and B, out of total number of students, 30% and 40% respectively are girls. The number of boys in school A is how much percent more/less than that in school B?Solution
Let the total number of students in school B be ‘x’. Therefore, total number of students in school A = 1.2x Number of boys in school A = 0.70 × 1.2x = 0.84x Number of boys in school B = 0.6x Required % = [(0.84x – 0.6x)/0.6x] × 100 = 40%
Find the wrong number in the given number series.
78, 103, 152, 233, 356, 523128, 173, 196, 189, 176, 133
Find the wrong number in the given number series.
32, 50, 72, 98, 128, 160
324, 385, 460, 549, 651, 769
P, Q and R invested their capitals in a business in the ratio 5:6:4 respectively. At the end of the year, they received profits in the ratio 10:18:8 res...
1024, 1056, 1096, 1144, 1196, 1260
132, 192, 238, 266, 284, 292
- 12.8, 17.4, 22, 26.6, 31.2, 36.8
11Â Â Â 36Â Â Â Â 112Â Â Â Â 336Â Â Â Â 1011Â Â Â Â 3036
40, 56, 85, 129, 190, 268