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Maths Puzzle
Numerical Ability
Jim rode his bike to school at an average rate of 8mp. On his return trip home, he averaged 6mph. If the total trip took 7 hours, how far is it from home to school
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Is this correct?
4|x|+|-4|=|-6|
4|x|+|-4|-|-4|=|-6|-|-4|
4|x|=|-6-4|
4|x|=|-10|
|x|=|-2.5|
x=-2.5
10+x=18