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sandra has 4 math test this marking period. she recieved 90%, 87%. and 92% on the first three. what is the minimum score she needs on her last test in order to average atleast a 90% in math class?
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sandra has 4 math test this marking period. she recieved 90%, 87%. and 92% on the first three. what is the minimum score she needs on her last test in order to average atleast a 90% in math class?

User Arseniy Rubtsov
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She would need to get a 90% or more.

User Matheus Miranda
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