## jungbunny 3 years ago Tom is 4 years older than Jerry. Nine years ago, Tom was 5 times as old as Jerry was then. How old is each now?

1. Callisto

Let x be the age of Tom now. ''Tom is 4 years older than Jerry.'', what is the age of Jerry now? @jungbunny

2. jungbunny

wait but how do you set up the equation?

3. Callisto

Just do it step by step. Can you tell me if Tom is x years old now, how old is Jerry?

hi, can you take jerry's present age be x then tom is four years older that implies tom's age is (x+4) after that talk about nine years before age of both of them.. are you following..?

5. jungbunny

yup

nine yearss before, jerry should be of age nine less than his present age , which implies jerry is (x-9) years old then..

let's talk about tom, his age must also be 9 less than his present age.. all followed ..?

8. jungbunny

yes

now, they have in question given a relation relating tom's and jerry's age nine years before... saying that "Tom was 5 times as old as Jerry was then"

so you simply write it in equation form !!

okay, tom's age nine years before = (x+4)-9 do you agree..?

12. jungbunny

yes

here's the equation ! tom's age nine year before = five times( jerry's age nine years before) this means (x+4)-9 = x_9 solve this...

sorry that's minus and not underscore in above equation !

15. jungbunny

ok

hopefully you understood !!

17. jungbunny

you have to use distributive proberty right?

for what ? you know how to solve lenear equations , right ?

19. jungbunny

not really...i don't remeber how to.

i'm sorry the equatin is (x+4)-9= 5(x-9) i missed a nine ! and yes darling your right use distributive property !

21. jungbunny

thank you