Question

2. Si a/7=16/b=c/3 ; donde: ac=84, calcular "b".

Answer 1

Hola !! ^^

=> Resolviendo ;

a/7 =16/b = c/3

ademas : ac =84 .... a=84/c


a/7 = c/3
a= 7c/3


=> Igualamos las "a" :

7c/3 = 84/c
7c^2 = 84*3
c^2 = 84*3/7
c^2 = 12*3
c^2 = 36
c= 6

=> Calculamos "a" :

a= 84/c
a= 84/6
a= 14

=> Calculamos "b" :

a/7= 16/b

14/7 =16/b
b= 16/2
b= 8

Respuesta : 8

Espero te sirva !! ^^