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03 Jan 2023, 10:00
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B
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
91% (00:55) correct
9%
(01:23)
wrong
based on 64
sessions
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In a class, 50% of the students studied Mathematics and 40% studied Biology. If 20% of the students studied neither Mathematics nor Biology, what percentage of the students studied both Mathematics and Biology?
A. 0%
B. 10%
C. 20%
D. 30%
E. 40%
A. 0%
B. 10%
C. 20%
D. 30%
E. 40%
03 Jan 2023, 10:51
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100-20= 50+40-(Students who studied both mathematics and biology)
Students who studied both mathematics and biology= 50+40-80=10 %
Option B is the answer
Posted from my mobile device
Students who studied both mathematics and biology= 50+40-80=10 %
Option B is the answer
Posted from my mobile device
03 Jan 2023, 10:53
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Bunuel
We can use a double matrix to plot the details and find the value.
Option A
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