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One day, I went to my colony park and saw that many people were busy with their routines. I found that there were $150$ people in total. I observed that $18$ people were jogging, $24$ were doing yoga, $36$ were engaged in laughing therapy, and the rest of the people preferred to walk.$\newline$(a) What percent of people were jogging?$\newline$i) $15\%$$\newline$ii) $12\%$$\newline$iii) $10\%$$\newline$iv) $20\%$$\newline$(b) What percent of people were doing yoga?$\newline$i) $12\%$$\newline$ii) $16\%$$\newline$iii) $18\%$$\newline$iv) $20\%$$\newline$(c) How many people preferred to walk?$\newline$i) $72$$\newline$ii) $62$$\newline$iii) $52$$\newline$iv) $82$$\newline$(d) What percent of people were doing laughing therapy?$\newline$i) $22\%$$\newline$ii) $24\%$$\newline$iii) $30\%$$\newline$iv) $26\%$