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lulus quiz marks were 67, 45, 55, and 60 for the first four days of this week. By the end of friday, her mean quiz mark for the 5 days was 58. what was her quiz mark in friday?

Respuesta :

Ata258

Answer:

x=63

Step-by-step explanation:

mean number adding numbers and divided by how many numbers added

x score for fifth day

mean =58

(67+45+55+60+x)/5=58

(227+x)/5=58

227+x=58*5

227+x=290

x=290-227

x=63

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