Hamish and his friend Ben live in villages which are 51 miles apart. During the summer holidays, they agreed to cycle towards each other along the same main road. Starting at noon, Hamish cycled at mph. Starting a 2pm, Ben cycled at mph. They met at 4pm. If they had both started at noon, they would have met at 2.50pm.
What is the value of ?
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7.5
8
10.5
12
12.75
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