During lockdown, Amit was suffering from heart problem. After proper check-up it was deducted that he has 45% chance of having heart attack, but yoga and mediation assumed to reduce the chance of heart attack by 25% and 20% respectively. He has options to choose any of the two options with equal probabilities. If Amit choose yoga to reduce the chance of heart attack, then the chance of heart attack is :
Answer & explanation
Correct answer: option 4
H → Chance of Heart attack
Y → Yoga
M → Meditation
P(H) = 45%
P(Y) = 50% = P(M)
P(H/Y) = 45% × (100 - 25%) = 33.75%
$=\frac{135}{400}=\frac{27}{80}$