1

28. A bag contains 6 red marbles, 5 yellow marbles, and 7 green marbles. How many additional red marbles must be added to the 18 marbles already in the bag so that the probability of randomly drawing a red marble is 3/5 ?

  • F. 12

  • G. 16 

  • H. 18 

  • J. 24 

  • K. 36