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Maths Puzzle
Numerical Ability
If 5 apples and 4 oranges cost $3.40 while 7 apples and 6 oranges cost $4.90.Find the cost of an apple and an orange.
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book Other Question
If I know the length of a cord of a circle and the distance from the center of the cord to the edge of the circle. How do I find the radius of the circle. Thanks. Jim
2(3x+1)+15=-7