If 42.24 = k(14 + m/50), where k and m are positive integers and m < 50, then what is the value of k + m ?  Choose the correct choice from the following answers.
A) 6
B) 7
C) 8
D) 9
E) 10
42.24 = 14K + Km/50...we can rewrite the number as follows:   42+ 0.24= 14K + Km/50........Since K is integer, then 42=14K..........K=3   0.24=Km/50......24/100=3m/50......m=4   k+m=3+4= 
<gadget id="calculator">3+4</gadget>
<output>7</output>
7   Answer: 7
<result>B</result>
If 42.24 = k(14 + m/50), where k and m are positive integers and m < 50, then what is the value of k + m ?