If a: b is 4 : 6 and b : c is 10 : 11, then c : a is :
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 33 : 20.
Calculations:
⇒ a/b = 4/6
⇒ a/b = (4 × 10)/(6 × 10) = 40/60
⇒ b/c = 10/11
⇒ b/c = (10 × 6)/(11 × 6) = 60/66
⇒ c/a = 66/40 = 33/20
⇒ c : a = 33 : 20