[    1    2    3    4    5    6    7    8    9    10    11    12    13    14    15    16    17    18    19    20    ]   FINISH QUESTION 20/20 London and Manchester are 200 miles apart. Jack travels from London to Manchester at an average speed of 70mph. Robert travels in the opposite direction, from Manchester to London, at an average speed of 30mph. Knowing that they leave at the same time, in how much time will their paths cross each other? ? 1 hour 1 hour and a half 2 hours 2 hours and a half Revoke your decision