exam Maths Puzzle Numerical Ability

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sqrt(y+4)=y-8

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exam Other Question

The first part of the 660-mile journey was by car at 30 MPH. The second part was by bus at 60 MPH. If the total time was 14 hours, what was the distance traveled by bus?
Please help solve this one. thanks.
If a guy wire for a tree is 14 ft. long making a 41 degrees angle with the ground, how far is the base of the tree from the stake anchoring the wire.