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Maths Puzzle
Numerical Ability
23=3x+7
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exam Other Question
A commuter plane flies to a small town from a major airport. The average speed flying to the small town was 250mph and the average speed returning was 150mph. The total flying time was 4hrs. Find the distance between the two airports.
How do I solve 5 square root 20 + 3 square root 98 - 2 square root 45 + the square root of 15.