In an examination a candidate must secure 40% marks to pass. A candidate, who gets 220 marks, fails by 20 marks. What are the maximum marks for the examination?
A600
B1200
C800
D900
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In an examination there were 640 boys and 360 girls. 60% of boys and 80% of girls were successful. The percentage of failure was :
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ഒരു സംഖ്യയുടെ 25% ഉം ആ സംഖ്യയുടെ 30% ഉം തമ്മിലുള്ള വ്യത്യാസം 500 ആണ്. സംഖ്യയുടെ 20% എന്താണ്?