Question

si w/6 = v/5 = 2w-v/x entonces x vale:

a)5
b)7
c)11
d)6
e)12

Answer 1

Recuerda que:

$\frac{a}{b} = \frac{c}{d} = k$

$\frac{a + c}{b + d} = k$

...

$\frac{v}{5} = \frac{2w - v}{x} = \frac{w}{6}$

$\frac{v + 2w - v}{5 + x} = \frac{w}{6}$

$\frac{2w}{5 + x} = \frac{w}{6}$

$\frac{2}{5 + x} = \frac{1}{6}$

$12 = 5 + x$

$x = 7$