Question

na serie de razoes X/10=Y/20=Z/14,calcule x,y,z sabendo que x+y+z=88

Answer 1

x/10 = y/20 => x = y.10/20
                        x= y/2
z/14 = y/20 => z= y.14/20
                        z= 7.y/10
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x + y + z= 88
y/2 + y + 7y/10
MMC.:
5y/10 + 10y/10 + 7y/10 = 880/10
.: 5y + 10y + 7y = 880
22y = 880
y= 880/22 => y= 40

.: z= 7.y/10 -----> z= 7x40/10 => z= 28
x= y/2 -----> x= 40/2 => x= 20