Jason bought some bookmarks and gave half to them to Kelvin. Kelvin

bought some stickers and gave half of them to Jason.

Then Jason gave 7 bookmarks to his brother and found that he had 1/9 as

many bookmarks as stickers left. Kelvin gave 12 stickers to his younger

brother and found that he had 1/6 as many bookmarks as stickers left.

(a) How many stickers did Kelvin have in the end?

(b) How many bookmarks did Jason buy?

Guest Sep 22, 2021

#1**+1 **

B==Bookmarks, S==Stickers.

Jason ==1/2B + 1/2S

Kelvin==1/2S + 1/2B

Jason ==[1/2B + 1/2S] - 7

[1/2B - 7] / [1/2S] ==1 / 9...................(1)

Kelvin==[1/2B] /[1/2S - 12] ==1/6....................(2), solve for B, S

**B==50, S==324**

**(a) Kelvin had in the end==[1/2*324 - 12[==162 - 12 ==150 stickers.**

**(b)Jason bought ==50 Bookmarks.**

Guest Oct 6, 2021