Na2βSO4β(aq)+BaCl2β(aq)→BaSO4β(s)+2NaCl(aq)
In the given reaction, which product remains in the solution?
A man travels from point A to B at a speed of 56\( \frac{1}{4} \) km/h and returns to A through the same route by increasing his speed by 33\( \frac{1}{3} \)% of his earlier speed. His average speed (in km/h) for the whole journey is:
63\( \frac{1}{2} \)
60\( \frac{5}{7} \)
62\( \frac{1}{4} \)
64\( \frac{2}{7} \)