A is 11 years old and B is 68 years old. In how many years will B be just 4 times as old as A?
2 answers:
In x amount of years, B will only be A x 4
For A that would be 4 (11 + x), for B that would just be 68 + x
4(11 + x) = 68 + x
44 + 4x = 68 + x
44 + 3x = 68
(3 x 8) = 24, 44 + 24 = 68
So 8 must be the answer
in 8 years, B will only be 4 times as old as A
Hope This helps!
Answer:
8 years after
Step-by-step explanation:
Let's make the equation x
B will be 4 times older after x years
We can list the equation like this:
4(11+x)=68+x
We can simplify the left side
44+4x=68+x
We will need to subtract x on both side to move the x to one side.
we will get 44+3x=68
Then we can subtract 44 on both sides to make the number move to 1 side we will get 3x=24
And we can divide by 3 on both sides.
x=8
That's the answer~
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