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nika2105 [10]
3 years ago
12

OA

Mathematics
1 answer:
andrew11 [14]3 years ago
7 0

Answer:

4.5

Step-by-step explanation:

that is

their rates =1/6, 1/3 respectively

total =1/2

if 1/2=9

1= 9/2

= 4.5

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======================================

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