In a bag, white marbles and red marbles are in the ratio of 3 : 5. If the number of red marbles are 150, then how many white marbles are there ?
Answer & explanation
Correct answer: option 1
White : Red
3 : 5
⇒ No. of Red marbles = 150
⇒ 5 units = 150
⇒ 1 unit = 30
⇒ No. of white marbles = 3 x 30 = 90.