A boat travels 120 km upstream in 6 hours and the same distance downstream in 4 hours. What is the speed (in km/h) of the stream?


A

5 km/h


B

10 km/h


C

3 km/h


D

6 km/h


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Updated: 20 hours ago

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A shopkeeper marks his goods 40% above the cost price and offers a discount of 20% on the marked price. What is his gain percent?


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A

12%


B

17%


C

9%


D

15%


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A motorboat, whose speed in 18 km/h in still water goes 36 km downstream and comes back in a total of 4 hours 30 minutes. The speed of the stream is-

Created: 1 month ago

A

8 km/h

B

5 km/h

C

5.5 km/h

D

6 km/h

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Updated: 1 month ago

একটি সংখ্যার ১২% নিলে ৯৬ পাওয়া যায়, সংখ্যাটি কত? 


Created: 1 week ago

A

৭২০

B

৮০০

C

৯০০

D

৯৬০

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Updated: 1 week ago

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