contestada

Moe is 12 years older than Barney .three years ago ,moe was five times as old as Barney .how old is Barney now

Respuesta :

the answer is 7 years old.
apologiabiology
m=12+b

m-3=5(b-3)
sub 12+b for m
12+b-3=5(b-3)
expand and combine like terms
b+9=5b-15
minus 4b both sides
9=4b-15
add 15 both sidse
24=4b
divide by 4
6=b

barney is 6
moe is 18
 3 years ago, barney is 3 and moe is 15, 3*5=15


barney is 6 now

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