If 42.42 = k(14 + m/50), where k and m are positive integers and m < 50, then what is the value of
k + m ?
(A) 6
(B) 7
(C) 8
(D) 9
(E) 10
Ans E
k + m ?
(A) 6
(B) 7
(C) 8
(D) 9
(E) 10
Ans E
If 14k = 42 and mk/50 = 42/100 = 21/50, then it will satisfy the given equation.
14k = 42 => k = 3
mk = 21 => 3m = 21 => m =7
Hence; m+k = 10.
