Ratio between two numbers is 3: 4 and their sum is 420. Find the smaller number?
Choose one
A) 378
B) 180
C) 820
D) 734
E) 840
Explanation:   3x + 4x = 420   x = 60 =&gt; 3x = 180   Answer: Option 180
<result>B</result>
Ratio between two numbers is 3: 4 and their sum is 420. Find the smaller number?