exam Maths Puzzle Numerical Ability

5. Mandy begins bicycling west at 20mph. Liz leaves from the same point 1 hour later bicycling west at 30mph. When will she catch up with Mandy?

a. Define the variables.
b. M

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exam Other Question
How do you simplify (x-7)^2 Write in lowest terms:


x^2-x-6/x^2-2x-8 . x^2+7x+12/x^2-9