If a : b = 9 : 5, b : c = 4 : 11. Find a : c.
Show answer & explanation
Correct answer: B
Explanation
Given:
a : b = 9 : 5
b : c = 4 : 11
Multiply the first ratio by 4:
a : b = 36 : 20
Multiply the second ratio by 5:
b : c = 20 : 55
a : b : c = 36 : 20 : 55
a : c = 36 : 55