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1. Salma's average in four tests is 80%. What mark does she need score in her fifth test to make her average 84%?
- A. 100%
- B. 100%
- C. 100%
- D. 100%
Answer: Option A
Explanation:
the sum of the first 4 test scores is 4*80 = 320
the sum of ALL 5 scores to be 5*84 = 420
she need score in her fifth test = 420 - 320 = 100
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