Seudónimo Seudónimo

18-03-2017
Mathematics

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If 75% of a class answered the 1st question on a certain test correctly, 55% answered the 2nd question on the test correctly and 20% answered neither of the question correctly, what percent answered both correctly?

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Cellow111 Cellow111

18-03-2017

100-20=80
80-75=5
75-55=20
20+5=25
Answer=25

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