Question

John's age after 15 years will be 5 times his age 5 years ago. What is the present age of John?
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Answer 1

Step-by-step explanation:

We'll use "a" as the variable for his current age. We can set up an equation like this:

His age in 15 years (a+15) will be 5 times his age 5 years ago (5*(a-5)).

a+15=5*(a-5)

a+15=5a-25

40=4a

a=10

John is currently 10 years old. (Five years ago he was 5; in 15 years he will be 25, which is 5 times 5)

please mark as brainlest answer

Answer 2

Answer:

let's take it's age x

Step-by-step explanation:

x+15=x-5

do the evaluation