Consider the following reaction, the rate expression of which is given below [ aligned & A + B C & rate = k [ A ]^ 1 / 2 [ ~B ]^ 1 / 2 aligned ] The reaction is initiated by taking (1 M ) concentration of ( A ) and ( B ) each. If the rate constant (( k ) ) is (4.6 10⁻² ~s ⁻¹ ), then the time taken for ( A ) to become (0.1 M ) is ______ sec. (nearest integer)