Asked by Nabela
Kevin is 20 years older than his sister Joan.In 14 years,he will be twice as old as Joan.How old is of of them now?
Answers
Answered by
Steve
Add 14 to their ages, and if Joan is x years old now, you have
x+20 + 14 = 2(x+14)
x+20 + 14 = 2(x+14)
Answered by
Ganett
| Now |+ 14 years
------|------|------------------------
Kevin | x+20 |x+20+14;2(x+14
------|------|------------------------
Joan | x |x+14
------|------|------------------------
x+20+14= 2(x+14)
x+34= 2x+28
34-28=2x-x
x=6
x+20= 6+20= 26
So, Kevin is 26 while Joan is 6.
But, check my work.
So Substitute.
6+20+14 = 2(6+14)
40=12+28
40=40
I am right yay!!!!!
------|------|------------------------
Kevin | x+20 |x+20+14;2(x+14
------|------|------------------------
Joan | x |x+14
------|------|------------------------
x+20+14= 2(x+14)
x+34= 2x+28
34-28=2x-x
x=6
x+20= 6+20= 26
So, Kevin is 26 while Joan is 6.
But, check my work.
So Substitute.
6+20+14 = 2(6+14)
40=12+28
40=40
I am right yay!!!!!
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