the ratio between the speeds of two trains is 7:8.if the second train runs 400 kms.in 5 hours,the speed of the first train is
a).10km/hr b).50km/hr
c).71km/hr d).none.
the ratio between the speeds of two trains is 7:8.if the second train runs 400 kms.in 5 hours,the speed of the first train is
a).10km/hr b).50km/hr
c).71km/hr d).none.
Ans - none
real ans is 70 km/hr.
The ratio between the speeds of two trains is 7 : 8. If the second train runs 400 kms in 5 hours,
then the speed of the first train = 400/5= 80 kms/hr
then the speed of the first train is:80*7/8 = 560/8 = 70 km/hr
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CAclubindia
