A student test scores are 87, 95, 76, and 88. He wants an average of 85 or better overall. What is the minimum score he must get on the last test in order to achieve that average?

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Answer 1 · 2016-05-13T02:57:03

The student must get #=79#

Let #x# be the unknown score

#(87+95+76+88+x)/5=85#

#(346+x)=5(85)#

#346+x=425#

#x=425-346#

#x=79#

God bless....I hope the explanation is useful.