book Maths Puzzle Numerical Ability

Please help me solve this problem using only one variable.

The Jones family drove to Disneyland at 50 miles per hour and retrned on the same route at 40 miles per hour. Find the distance to Disneyland if the total driving time was 7.2 hours.

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book Other Question
Show EACH step in solving each of the following equations. Show which method (factoring, square root method, completing the square, or quadratic formula) you used to solve it and tell why.
a: (x + 2)^2 = 8 fraction help needed

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