One percent of the people of country X are taller than 6 ft, 2 percent of
the people of country Y are taller than 6 ft. There are thrice as many people
in country X as in country Y. Taking both countries together. What % of
people are taller than 6 ft?

• let country y has 100 peoples. then taller peoples are 2. (2% of 100)
  and no of people in x are 300. then taller peoples are 3. (1% of 300)
  population of both country is 400 and taller peoples are 5.
  
  in percent => (5/100)*400 = 1.25% ans.
• 10 years agoHelpfull: Yes(3) No(1)
• 5*100/400 = 1.25%
• 10 years agoHelpfull: Yes(0) No(2)