Question

5. 40% of residents in a building complex are from the service class. 55% of the residents are from
the business class and the remaining are into research and development. What percentage of the
residents in the building complex are into research and development? If there are 1500 people
residing in the building complex, how many people are in the service class, business class and in
research and development?​

Answer 1

Step-by-step explanation:

5% are there in research and development

if there are 1500 people

people in service class = 40/100 × 1500 = 40×15 = 600

people in research and development= 5/100 × 1500 = 5×15 = 75

people in buisness class = 55/100 ×1500 = 15×55 = 825