book Maths Puzzle Numerical Ability

A car gets 28 mpg on the highway, 22 mpg in the city..distance is 627 miles with 24 gallons of gas used....how many miles were driven in the city

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book Other Question

What is the focus of the parabola with the equation {{{x=-(1/4)(y-3)^2-5}}} LIghthouse - Height(feet)
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Currituck - 162
Bodie Island - 165
Ocracoke - 65
Cape Hattress - 193
Cape Lookout -165

***What is the interquartile range?