Arrange the given ratios in descending order:
15 : 7, 5 : 11 and 21 : 77
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 15 : 7 > 5 : 11 > 21 : 77.
Given that
The ratio 15 : 7, 5 : 11, and 21 : 77
According to the question;
LCM of 7, 11, 77 = 77
⇒ 15/7 × 77 = 165
⇒ 5/11 × 77 = 35
⇒ 21/77 × 77 = 21
Now, These values are arranged in a descending order = 165 > 35 > 21
Hence, the required arrangement of ratio = 15 : 7 > 5 : 11 > 21 : 77