A study was made for the number of persons of different age group visited in a library in a week which is shown in the histogram. Study the histogram and answer the question given below.
The ratio of the number of persons in the age groups 15-20 years and 20-25 years together, to the number of persons in the age groups 30-35 years and 35-40 years together, is:
Answer & explanation
Correct answer: option 1
Number of persons in the age groups 15-20 years and 20-25 years : Number of persons in the age groups 30-35 years and 35-40 years
( 300 + 400 ) : ( 350 + 100 )
700 : 450
14 : 9