From all the population interviewed 36% respondents had a car at home, 19% had a motorcycle and 4% had both.
I need to find the percentage of respondents having a vehicle either motorcycle or car or both.
Could you please give some hints how to solve this problem ? Thank you
Look up the inclusion-exclusion principle:
$$P(A\cup B) = P(A) + P(B) - P(A\cap B)$$