Question
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?
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?
Answers
oobleck
jason: b-7 = 1/9 s
kelvin: b = 1/6 (s-12)
solve for b and s, and then you want
(a) s-12
(b) b
kelvin: b = 1/6 (s-12)
solve for b and s, and then you want
(a) s-12
(b) b
oobleck
oops.
(b) Jason bought 2b bookmarks.
(b) Jason bought 2b bookmarks.