the speed of two trains are in the ratio 4:5.if the speed of the first train is 64 km per hour what is the speed of the train
formula is given in attachment
solve it answer is 80km
prove that
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Answer:
the speed of two trains =4:5
the speed of first train =64km/h
so the speed of 2nd train =n
the speed =4 divide 5*64 divided by n (cross multiplication formula)
4n=5*64
n=5*64/4
n=320/4
n=80
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