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