Question

determina nr.

a+b+c=2140
a/b=2
c/b=7


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Answer 1

$\frac{a}{b} =2 ----> a= 2b$
$\frac{c}{b} =7 ---> c=7b$
a+b+c=2140
2b+b+7b=2140
10b=2140
b=214
a=2x214=428
c=7x214=1498

Answer 2

$\frac{a}{b}=2$⇒a=2b
$\frac{c}{b}=7$⇒c=7b
a+b+c=2140
2b+b+7b=2140
10b=2140
b=214
a=2·214
a=428
c=7·214
c=1498