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Maths Puzzle
Numerical Ability
Consider the relationship E X E, where E ={-2,3,4,5,9} List the ordered pairs
determined by {(x,y):> 4 and y < 4}
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Please help me solve for X: 2[x-(3x+1)=4-2x
Cynthia invested three times as much money at 6% as at 5%. If the total simple interest for one year is $1150, how much has Cynthia invested at 5%?