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Number of blue beads โ†’ u

Number of sets of blue beads โ†’ u รท 5 = u/5

Cost of blue beads โ†’ย  u/5 ร— 4 = 4u/5

 

Number of white beads โ†’ u + 119

Number of sets of white beads โ†’ (u + 119) รท 8 = (u + 119)/8

Cost of white beads โ†’ย  (u + 119)/8 ร— 5 = (5u + 595)/8

 

4u/5 = (5u + 595)/8

32u = 25u + 2975

7u = 2975

u = 425

(a) Jack could buy 425 blue beads with 2/7 of his allowance

(b)

Cost of blue beads โ†’ 4u/5 = 4 ร— 425 รท 5 = $340 (2/7 of his allowance)

2/7 = $340

7/7 = $340 รท 2 ร— 7 = $1190

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Thank you very much ๐Ÿ™๐Ÿ™๐Ÿ™๐Ÿ™๐Ÿ™

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