exam Maths Puzzle Numerical Ability

A BOAT TRAVELS 52 MILES UP THE RIVER IN THE SAME AOUNT OF TIME IT TAKES TO TRAVEL 92 MILES DOWN THE SAME RIVER. IF THE CURRENT IS 5 MILES PER HOUR, WHAT IS THE SPEED OF THE BOAT IN STILL WATER ?

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exam Other Question
Find the equation of a line passing through the origin that makes an angle of 52 degrees with the x axis. Find the GCF of the set of terms.

12a cubed b squared, 18a squared b cubed, 6a to the 4th power b to the 4th power