After taking 30 socks out of the dryer. Dina noticed that the ratio of blue socks to brown socks to black socks was 2 : 3 : 5. How many black socks were in the dryer?

A 21
B 15
C 9
D 6

Correct Answer: 15

অনুপাতের যোগফল = (2 + 3 + 5) = 10 Black মোজার সংখ্যা = 30 ×(5/10) = 15 টি
Bissoy MCQ
#গণিত #অনুপাত-সমানুপাত (Ratio-Proportion) #Bangladesh Commerce Bank Ltd #Commerce Bank Ltd - Officer - 2006

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