exam Maths Puzzle Numerical Ability

At 9:30 a.m. Andrew left Exeter for Portsmouth, cycling at 12 mi/hr. At 10:00 a.m. Stacy left Portsmouth for Exeter, cycling at 16 mi/hr. The distance from Exeter to Portsmouth is 20 mi. Find the time when they met.

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exam Other Question

If a farmer can see 12 miles from a firetower, How many square miles can he see?

Is 75.36 right? a. Let f(x)=1/x-4 and g(x)= square root (x-2)
1. find the product function (fg)(x)
2. Find the domain of the function found in part 1

b. Let f(x)=x^2-2x-6 and g(x)