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Study the following table and answer the questions.
Question 76
The ratio of the number of students of school B and C scoring marks less than or equal to 60% to that of schools A and D combined scoring marks above 60%, is
Solution
Number of students of school B scoring marks less than or equal to 60% = $$1170 * \frac{70}{30} = 2730$$
Number of students of school C scoring marks less than or equal to 60% = $$1170 * \frac{50}{50} = 1170$$
Number of students of schools A and D together scoring marks above 60% = 1160 + 1200 = 2360
Required ratio = (2730 + 1170): 2360 = 3900: 2360 =
