The ratio of three numbers is 3 : 4 : 5 and the sum of their squares is 1250.The sum of the numbers is :	Choose the correct choice from the following choices:
A) 30
B) 50
C) 60
D) 90
E) 40
Solution   Let the numbers be 3x,4x and 5x.Then,   9x2+6x2+25x2 = 1250=50x2= 1250=x2 = 25=x = 5.   ∴ Sum of numbers = (3x+4x+5x) = 12 x (3 +4 +5 )= 
<gadget id="calculator">(3 +4 +5 )</gadget>
<output>12</output>
12 x=(12x5) = 60.   Answer 60
<result>C</result>
The ratio of three numbers is 3 : 4 : 5 and the sum of their squares is 1250.The sum of the numbers is :