Need Intensive Practice 4A help!

[elfinbaby]

This book is on the 4th/5th grade level but I've run into a couple of problems that I can't solve unless I do them algebraically (sp?) which ds hasn't learned yet. There's got to be an easier way. I know I'm missing something.

 

The problems are #12 and 13 on pgs. 15, 16

 

D, J, and N have a total savings of $4800. If D saves $480 more than N and J saves $330 less than D, how much does J save??

 

Mr. C wants to give a group of his students stickers. If he gives each student 3 stickers, he will have 75 stickers left. If he gives each student 6 stickers he will need more stickers.

 

1) how many students are there

2) how many stickers does he have

 

Forgive me if there is some copyright issue - I hope there's not. I have the answers in the back but not the solutions.

 

Thanks!

[nmoira]

D, J, and N have a total savings of $4800. If D saves $480 more than N and J saves $330 less than D, how much does J save??

 

|---------| N's money

 

|---------|----| D's money (N's plsu $480)

 

|---------|--| J's money (D's less $330, or N's plus $150)

 

 

These added together are $4800.

If you get rid of the extra bits,

 

|---------|

 

|---------|

 

|---------|

 

 

 

together equal $4800-480-150 = $4170

So one bar is equal to $4170/3 = $1390

 

So J saves $1390+150 = $1540

 

==========================================

 

Here's the solution to the second problem. You're missing some information in your setup (if each student gets 6 stickers, 30 more will be needed).

[elfinbaby]

Thanks!!!