Car a is 30 miles ahead of car b car a is going 60 mph and car b is going 70 mph how long will it take car b to catch car a

3 hours

Step-by-step explanation:

After one hour, car a will be only 20 miles ahead of car b, after two hours, car a will only be 10 miles ahead of car b, and after 3 hour, they will both be equal. This is because car b is going 10 mph faster than car a, because 70-60=10. every hour, car b will catch up to car a by 10 miles.

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x + 107

step-by-step explanation:

let's say that the number he had before the mistake was x. then, he will have 107 dollars more than this, so the answer is x + 107.

by definition, an arc subtended by a central angle of some given measure has the same measure. so .