Answer:
Simply subtract the fail rate from 100; the resulting number is the pass rate. So, if you know that 6 percent of students failed, you would subtract: 100 - 6 = 94 percent is the pass rate for the test.
Step-by-step explanation:
23/40 can't be simplified as it has no common factors
Answer:
540 is the correct answer. Each mark is an increase of 20.
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