Q15. In a school which has a strength of 5500 students only 20% are girls. Find
the number of boys.
Q16. Amits salary is Rs. 7800 per month and Sumits salary is Rs. 8100 per
month. If Amit gets an increment of 40% and Sumit gets an increment of
50%. Who will earn more after wards?

1.Total number of students = 5500percentage of girls = 20%Number of girls = 20% of 5500 = 20100×5500 = 1100So, number of boys = 5500 - 1100 = 44002.Monthly salary of Amit = Rs 7800Rate of increment = 40%Increment = 40% of 7800 = 40100×7800 = Rs 3120So, final salary of Amit = Rs 7800 + 3120 = Rs 10,920Monthly salary of Sumit = Rs 8100Rate of increment = 50%Now, increment = 50% of 8100 = 50100×8100 = Rs 4050Now, final salary of Sumit = Rs 8100 + 4050 = Rs 12,150So, salary of Sumit is more than that of Amit after the increment.

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