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Question

Hi, kindly help. How to draw the model n solve the problem? Thanks

Answer

Thanks for the reply on solution 

Manage to use model drawing, as it is easier to explain to the kid

0 Replies 2 Likes ✔Accepted Answer

This question is easier working backwards as there is a direct relationship of ratio in the end.

So in the end, if Lynn had u bookmarks,  Ken had 4u bookmarks.

Lynn had ( u + 39 ) bookmarks in the beginning, and Ken had 450 bookmarks more than Lynn.

So

4u – ( u + 39 ) = 450

3u – 39 = 450             add 39 on both sides,

3u = 489

u = 163

4u = 652

So Ken had 652 bookmarks.

Check:  652 – 450 = 202

202 – 39 = 163

163 * 4 = 652 Checked

0 Replies 2 Likes