three 'age' word problems

[Idiris]

1) Larry is 8 years older than his sister. In 3 years, he will be twice as old as she is now. How old are they now?

2) Adam is 5 years younger than Eva. In 1 year, Eva will be three times as old as Adam 4 years ago. Find their ages now.

3) Four years ago, Katie was twice as old as Anna was then. In 6 years, Anna will be the same age that Katie is now. How old is each now?

Please show us how you would solve!

Thank you

 

[stapel]

Please show us how you would solve!

Most (legitimate) tutors won't "do" students' work for them, especially when no effort has been shown. Instead, they will provide other, similar, examples.

To review similar examples, please consider studying some of the many lessons available online. Then please attempt at least one of the exercises you posted. If you have trouble, please reply showing all of your work, so that the tutors can see where you may need help.

Thank you.

Eliz.

 

[Denis]

WHY were you given these 3 problems if you don't know how to solve?

Can you solve this for x:
2x - 7 = x + 10

 

[Mrspi]

1) Larry is 8 years older than his sister. In 3 years, he will be twice as old as she is now. How old are they now?

2) Adam is 5 years younger than Eva. In 1 year, Eva will be three times as old as Adam 4 years ago. Find their ages now.

3) Four years ago, Katie was twice as old as Anna was then. In 6 years, Anna will be the same age that Katie is now. How old is each now?

I'll help you with the first problem. Follow the same procedure for the others.

Larry is 8 years older than hs sister. In 3 years, he will be twice as old as she is now. How old is each now?

Let x = sister's age NOW

then, x + 8 = Larry's age NOW

How old will Larry be in 3 years? If Larry's age NOW is x + 8, then in 3 years, his age will be (x + 8) + 3, or x + 11.

The problem states that "in 3 years, he will be twice as old as she is now." So,
Larry's age in 3 years = twice sister's age now

x + 11 = 2x

Solve for x (should not be too difficult).

Once you know x, or the sister's age NOW, you should also be able to find Larry's age now, which is x + 8.