If two numbers are in the ratio 2:5. If 10 is added to both of the numbers then the ratio becomes 3:7 then find the smallest number? Choose the correct choice from the following answers:  A) 40  B) 80  C) 60  D) 20  E) 100
Given ratio - 2:5   2x + 10 : 5x + 10 = 3 : 7   7[2x + 10] = 3[5x + 10]   14x + 70 = 15x + 30   15x - 14x = 70 - 30= 
<gadget id="calculator">70 - 30</gadget>
<output>40</output>
40   Then smallest number is= 2   2x = 80   ANS - 80
<result>B</result>
If two numbers are in the ratio 2:5. If 10 is added to both of the numbers then the ratio becomes 3:7 then find the smallest number?