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Let man’s rate upstream be x kmph. Then his rate downstream = 3x kmph. 
Rate in still water = kmph = 2x kmph 16 = 2x x = = 8, So, Rate upstream = 8 kmph.
Ali the barber shaved 35% of his customers and gave a haircut to 45% of his customers. He charged Rs. 9 for a shave and Rs. 7 for a haircut. If 20% of c...
Arnav bought 23 notebooks for Rs.1240 from shop A and 11 notebooks for Rs.970 from shop B. What is the average price he paid per book?
A man travelled at a speed of 20 m/min for 100 min, and at a speed of 70 m/min for 50 min. His average speed is:
How many participants from India won the gold medal in the 14th International Olympiad on Astronomy and Astrophysics (IOAA) 2021?
Special Report on sustainable recovery, seen sometimes in news, is jointly released by
The convention of Prudence when applied to the balance sheet results
An example of intangible asset is:
Consider the following statements:
(1) The Earth’s magnetic field has reversed every few hundred thousand years.
(2) When the Earth was ...
A mixture (milk + water) contains milk and water in the ratio 7:3, respectively. If 19 litres of mixture is taken out, then quantity of milk left in the...
What are the characters that make a plant a hydrophyte ?
