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600 students took the test on physics and chemistry. 35% students failed in physics and 45% students failed in chemistry and 40% of those who passed in chemistry also passed in physics, then how many students failed in both:

Option 1)
162
Option 2)
138
Option 3)
60
Option 4)
none
Option 5)
120

Answers (1)

R rishi.raj

Failed = 100 - (25 + 40 +15) = 20%

20% of 600 = 120.

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