Multiple choice

Three friends D, E, F together earn $7000. The duplicate ratio of D's share to E's share is 1 : 4 and the sub duplicate ratio of E's share to F's share is 1 : 4. What amount of money will D get?

  1. $100
  2. $200
  3. $280
  4. $1400
  5. $1500
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

D^2/E^2 = 1/4 => D/E = 1/2. sqrt(E)/sqrt(F) = 1/4 => E/F = 1/16. Ratio D:E:F = 1:2:32. Total parts = 35. D's share = (1/35) * 7000 = 200.