Let S=score on the second exam, then
(67+S+(S+7))/3=84
cross multiply
2S+74=252
2S=178
S=89
So second exam: 89
third exam=89+7=96
Check: (67+89+96)/3=84 ok.
Answer:
(3) D.
(4) A.
Step-by-step explanation:
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➷ If it was increased by 25% to get the new number, it would also have to be decreased by 25% to get back to the original number. Therefore, the missing number is 25
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