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In a group of 400 students, 25% study commerce. Of those who study commerce, 40% also play sports. How many of the 400 students study commerce AND play sports?
A$65$
B$40$
C$100$
D$160$
Answer & Solution
Correct answer: B. $40$
25% × 40% = 0.25 × 0.40 = 0.10 = 10% of 400 = 40 students. Adding the percentages (65%) or just picking 25% (100) are CAT traps.
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