As it says he keeps 'pairs' of shoes so the answer has to be an even 'number' - ie B, C and E are all possible answers.
35/8 = (4 * 8 = 32) and 3 left over so answer is 4 3/8
The answer is 32/9 , or 1.68.
It took her 4 hours.
Since she travels 50 miles in just one hour, in four hours she could drive 200 miles. :)
