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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The speed of two trains = 4:5
The speed of 1st train = 64km/h
So, the speed of 2nd train = n
The speed = 4÷5×64÷n (cross multiplication formula)
4n=5×64
n =5×64÷4
n =320÷4
n =80
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it is given in attachment
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