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24 July, 16:28

The sum of three numbers is 855. One of the numbers, x, is 50%, more than the sum of the other two numbers. What is the value of x?

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  1. 24 July, 16:50
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    X+y+z=855; x=y+z+50/100• (y+z) = 150/100• (y+z); 15 (y+z) / 10 + y+z=855; 15y+15z+10y+10z=8550; 25 (y+z) = 8550; y+z=342; x=15•342/10=513
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