In maths exam, 3/10 of the total number of marks was allocated to fractions questions. 5/7 of the remaining marks was allocated to the questions involving decimals. The rest of the marks was allocated to the percentages questions.
What fraction of the total marks was allocated to percentages questions?
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Answer:
1/5
Step-by-step explanation:
For convenience i'll skip writing marks allocated to
Fractions: 3/10
Not Fractions: 1 - 3/10 = 7/10
Decimals: 5/7 of 7/10 = 5/10
Not fractions and not decimals = Percentage = 1 - ( 3/10 + 5/10) = 1 - 8/10 = 2/10 = 1/5
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