Question

Different sports played by the students of a school in 2018 and 2019 respectively is shown in the double bar given below. What is the ratio of number of students who took part in chess and football for the year 2019 to that of 2018?

Answer 1

The height of each bar gives the number of students who played particular sports.
Number of students who played chess and football in 2019 = sum of length of blue bars for chess and football
= 10 + 15 = 25
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Number of students who played chess and football in 2018 = sum of length of red bars for chess and football
= 20 + 10 = 30
$\left[1mark\right]$
$\therefore$ the required ratio = 25 : 30 = 5 : 6
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