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

A 21
B 15
C 9
D 6

Correct Answer: 15

Dryer মেশিন থেকে 30 টি মোঝা নেয়ার পর Dina খেয়াল করলো যে নীল, বাদামি ও কালো রংয়ের মোজার অনুপাত হলো 2 : 3 : 5. Dryer মেশিনে কয়টি কালো রংয়ের মোজা ছিলো ? Black মোজার সংখ্যা = 30 ×52 + 3 + 5×52 + 3 + 5 = 15 টি
Bissoy MCQ
#গণিত #অনুপাত-সমানুপাত (Ratio-Proportion) #National Bank Ltd #National Bank Ltd - Officer - 11.09.2009

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