How many solutions exist for 0.75(x+40)=0.35(x+20)+0.35(x+20)
2 answers:
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cross multiply
100(40-x) = 60(40 + x)
solve for x
x= 10
cross multiply
100(40-x) = 60(40 + x)
solve for x
x= 10
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cross multiply
100(40-x) = 60(40 + x)
solve for x
x= 10