Log in

View Full Version : I need a solution to this math


survivorboi
Jun 14, 2009, 10:33 AM
A man went to the store to buy three things, chicken, vegetables, and bananas. The total of his spent was $20.

Vegetables plus 9 dollars equals to the Chicken.

(Chicken plus vegetable) then minus $16 equals bananas.

How much is chicken, vegetable, and bananas each?

Remember, the total of his spent was $20.


Vegetable=V
Chicken=C
Banana=B

V+9=C
(C+V)-16=Banana


Please give me step by step on how to solve this problems. I would like to understand the problem as well as be able to solve similar problems, so please help me. Thanks!

Unknown008
Jun 14, 2009, 10:40 AM
You told us to remember that the total is $20, but you yourself forgot! :p lol.

You also have C+V+B=20.

Substitute second equation with the first one;

(V+9+V)-16=B
2V + 9 - 16 = B
2V - 7 = B

Use that in C+V+B=20;

C+V+(2V-7)=20

and C=V + 9

(V+9)+V+(2V-7)=20

Now, can you continue?

Hope it helped! :)

Maybe there's shorter way... I just did what passed in my mind.

20shasha
Jun 14, 2009, 11:25 AM
a man went to the store to buy three things, chicken, vegetables, and bananas. The total of his spent was $20.

Vegetables plus 9 dollars equals to the chicken.

(chicken plus vegetable) then minus $16 equals bananas.

How much is chicken, vegetable, and bananas each?

Remember, the total of his spent was $20.


Vegetable=v
chicken=c
banana=b

v+9=c
(c+v)-16=banana


please give me step by step on how to solve this problems. I would like to understand the problem as well as be able to solve similar problems, so please help me. Thanks!

I don't know am going to the fith grade in August sorry

Unknown008
Jun 14, 2009, 11:28 AM
Hi 20shasha! Welcome to AMHD! :) If ou don't know a question, better not post. You post only if you know, or have a suggestion, please, OK? Take time to carefully read the rules, by clicking on HELP in your blue bar near the top right corner. Thanks.

survivorboi
Jun 14, 2009, 12:14 PM
LOL, hey Unknown, I really can't continue on your post, I'm sorry, I don't understand how you can simplify it if there's so much unknown (to me anyways) variables.

This is how I got it:

(V+9)+V+(2V-7)=20

V+V+(2V-7)=20-9
V+V+(2V-7)=11

V+V+2V=11+7
V+V+2V=18

V+V+V=18/2

V+V+V=6

Now what?

Thanks!

Unknown008
Jun 15, 2009, 08:35 AM
NO!! You did a mistake... that show me that you didn't have such a solid base in maths...

Ok, x+x= 2x, right?
x+2x=3x, still right?
2x+2x=4x, do you agree?

Then, V+V+2V = ?

Now that you've found the value of V, you can find the rest easily. In the first equation; V+9=C

Since you got V, you can have C.

Having V and C, you can find B through V+B+C=20, or (C+V)-16=B. You just need to substitute in your values for V and C. Got it now? Or, do you need more details?

I hope it helped! :)

survivorboi
Jun 16, 2009, 02:19 PM
Lol, Thanks! Unknown, you will be perfect for my math tutor!


=)

Unknown008
Jun 17, 2009, 07:27 AM
LOL! :p Ask anytime! :)