In an examination there were 640 boys and 360 girls. 60% of boys and 80% of girls were successful. The percentage of failure was: - Study24x7
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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:

A

20

B

60

C

30.5

D

32.8

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