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Jane is now 4 times as old as her brother Andrew.  In one year, Jane will be 3 times as old as Andrew will be then.  How old is Jane now?

 Jun 8, 2020
 #1
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Ok, 

 

Let's have Jane's age as "j" and Andrew's age as "a".

 

j = 4a

 

j+1 = 3(a+1)

 

We convert j into 4a

 

4a + 1 = 3a + 3

 

4a = 3a + 2

 

a = 2

 

If a = 2

 

j = 8

 

Andrew is 2 years old

 

Jane is 8 yrs old

 

(As of now)

 Jun 8, 2020

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