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Maths Puzzle
Numerical Ability
5. The width of a rectangle is 15 feet less than its length, and the perimeter is 210 feet. Find the width:
a. 60 feet b. 35 feet c. 45 feet d. 40 feet e. none
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book Other Question
A race track measures 8 miles long. If an automobile completes the track in exactly 3 minutes, what is its average rate of speed in miles per hour?
solve using substitution
2x + y = 4
3x + 2y = 1