cjrigby25651 cjrigby25651

04-06-2018
Mathematics

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The sum of 3 numbers is 73, the first number is 5 less than the second, the third is 2 times more than the first, what are the three numbers

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Wen3101 Wen3101

04-06-2018

assume 3 numbers are x, y, and z

x+y+z = 73 ------ (1)
x-5=y ------ (2)
2x=z ------ (3)

sub (2) and (3) into (1)
x+x-5+2x=73
4x=78
x=19.5

y=19.5-5
y=14.5

z=2(19.5)
z=39

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