two trains for palwal leave kanpur at 10a.m and 10:30 am and travel at the speeds of 60 kmph and 75 kmph respectively. After how many kilometers from kanpur will the two trains be together?
A certain sum of money is invested and compounded annually. That sum increases to 4 times, in 4 years. In how many years, the sum increases to 16 times the principle amount?
mathematics is the indispensible instrument of all physical research
berthelot
Language is remarkable, except under the extreme constraints of mathematics and logic, it never can talk only about what it's supposed to talk about but is always spreading around.