exam Maths Puzzle Numerical Ability

Two cars are 10 miles apart going in the opposite direction. If one car goes 50 mph and the other 60 mph; how far will they be in two hours?

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exam Other Question
Review examples 2, 3, and 4 in section 8.4 of the text. How
does the author determine what the first equation should be? What about the second equation?
How are these examples si Can someone help me on this problem?

I need to know which property of the real numbers is illustrated by the following statement?

7 + 8 = 8 + 7

Thanks,
Sher