one % of the people of country x are taller than 6 ft. two % of the people of country y are taller than 6 ft .there are thrice as many as people in country x than y.taking voth countries together what is percentage of peple taller than 6 ft?

• No. of people in country X = 3Y
  Total no. of people in X nd Y together is 3Y+Y = 4Y
  1% of 3Y is taller than 6 in Y => 1*3Y/100 => 3Y/100 members
  2% of Y are taller than 6 in Y => 2*Y/100 => 2Y/100 members
  Total no. of people taller than 6 in X nd Y => 3Y/100 + 2Y/100 = 5Y/100 = Y/20
  Then a% of people are taller in X nd Y
  a * 4Y/100 = Y/20
  4a = 5
  a = 5/4 = 1.25%
  
  Ans : 1.25 %
  
  
• 10 years agoHelpfull: Yes(7) No(0)
• no of ppl in country X= u
  no of ppl in counttry Y=v
  1% of u=u/100
  2% of v=2/100
  u=3v
  taking both together=u/100+2v/100=u+2v/100=5v/100
  total ppl=u+v=3v+v=4v
  % of ppl taller thn 6 ft are=5v*100/4v*100=1.25%
• 10 years agoHelpfull: Yes(0) No(0)