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Ali made some bookmarks to sell at a funfair. He sold 50 bookmarks on Saturday and 1/3 of the remaining bookmarks on Sunday. He still had 3/7 of the bookmarks left. How many bookmarks did Ali make?

 Oct 11, 2023
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B - 50 - (B - 50)(1/3)   =  (3/7)B

 

B -  50  - (1/3)B+ 50/3   = (3/7)B

 

(2/3)B -100/3  = (3/7)B

 

(2/3 - 3/7)B   = 100/3

 

(5/21)B = 100/3

 

B  =  (100/3) ( 21/5)   = (100 / 5) ( 21 / 3)  =    20 * 7  =    140  = total that he made

 

cool cool cool

 Oct 11, 2023

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