b) A survey is conducted in a community regarding the activities that are beneficial
for healthy life. Out of 100 people participating in the survey, it is found that the
ratio of number of people who are doing yoga (Y) and going for jogging (J) regularly
in the early morning is 4: 5. If 25 people are following both the activities and 35
people are not following both of these activities, answer the following questions.
(i) If n(Y) = 4x, what is the value of n(J)?
(ii) Draw a Venn-diagram to represent the above information.
(iii) Find the number of people who are going for jogging.
(iv) Find the percent of people who are going for jugging only.