The given Bar Graph presents the number of students of two schools for six years.
What is the ratio of the number of students taken for all years together from school A to that from school B ?
Total number of students in school A in all years$$\ =640+800+500+700+900+750=4290$$
Total number of students in school B in all years$$\ =550+820+600+750+500+480=3700$$
$$\therefore\ $$Required ratio$$=4290:3700=429:370$$
Hence, the correct answer is Option D
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