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UP Police SI Exam 13 Dec 2017 Shift 3 Solved Paper

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Question : 81

Total: 160

The average age of boys in a school with 560 students is 12 years and that of girls is 11 years. If the average age of a school is 11 years 9 months, then what will be the number of girls in the school?

120
150
100
140

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