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Maths Puzzle
Numerical Ability
13X+(-6)(4X)
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book Other Question
An airplane flew for 4 hours with a 20-km/h tail wind. The return flight against the same wind took 5 hours. Find the speed of the plane in still air.
How would you solve this equation?
The width of a rectangle is 6 cm less than the length. The perimeter is 72 cm. Write and solve an equation to find the width and the length of the rectangle.