Three numbers are in the ratio 3:5:7. The largest number value is 70. Find difference between Smallest & largest number is? Select:
A) 40 B) 45 C) 35 D) 30 E) 50
== 3:5:7   Total parts = 15   = The largest number value is 70   = The largest number is = 7   = Then 7 parts -----&gt; 70 ( 7 * 10 = 70 )   = smallest number = 3 &amp; Largest number = 7   = Difference between smallest number &amp; largest number is = 7 - 3= 
<gadget id="calculator">7 - 3</gadget>
<output>4</output>
4= Then 4 parts -----&gt; 40 (4 * 10 = 40)   40
<result>A</result>
Three numbers are in the ratio 3:5:7. The largest number value is 70. Find difference between Smallest & largest number is?