a test has two parts the first part is worth sixty percent and the second is worth 40% if a student gets 95% of part one correct what percentage must this student get in part two to achieve an average of 90% for the whole test
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0.95×60+x×40=90
so,57+40x=90
so, x=33/40
so, 82.5% in part two he must get to achieve an average of 90 % in the whole test
0.95×60+x×40=90
so,57+40x=90
so, x=33/40
so, 82.5% in part two he must get to achieve an average of 90 % in the whole test
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