Chemical Kinetics Part 2

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