exam Maths Puzzle Numerical Ability

John and William leave their home traveling in opposite directions on a straight
road. John drives 20 miles per hour faster than William. After 4 hours they are
250 miles apart.

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exam Other Question
What type of solution do you get for quadratic equations where D>0 ? Having issues with this problem, can you help?



The sum of two numbers is 112. The second is 7 more than 4 times the first. What are the two numbers?