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Q: In a bag containing red, green and pink tokens, the ratio of red to green tokens was 5 :12 while the ratio of pink to red tokens was 7 : 15. What was the ratio of green to pink tokens ?
  • A. 25 : 28
  • B. 36 : 7
  • C. 12 : 7
Correct Answer: Option B - Given, Green tokens : Red tokens =12 : 5 Red tokens : Pink tokens =15 : 7 Then, Green tokens : Red tokens : Pink tokens = 12×15 : 15×5 : 7×5 180 : 75 : 35 Green tokens : Pink tokens 180 : 35 = 36 : 7
B. Given, Green tokens : Red tokens =12 : 5 Red tokens : Pink tokens =15 : 7 Then, Green tokens : Red tokens : Pink tokens = 12×15 : 15×5 : 7×5 180 : 75 : 35 Green tokens : Pink tokens 180 : 35 = 36 : 7

Explanations:

Given, Green tokens : Red tokens =12 : 5 Red tokens : Pink tokens =15 : 7 Then, Green tokens : Red tokens : Pink tokens = 12×15 : 15×5 : 7×5 180 : 75 : 35 Green tokens : Pink tokens 180 : 35 = 36 : 7