Total time = Time for first part + Time for second part.<br><br>
&bull; First part: 200 ÷ 100 = 2 h<br>
&bull; Second part: 180 ÷ 60 = 3 h<br>
&bull; Total time = 2 + 3 = 5 h<br><br>
Final Answer: 5 h