Question

10. An express train takes 1 hour less than a passenger train to travel 132 km between
Mysore and Bangalore (without taking into consideration the time they stop at
intermediate stations). If the average speed of the express train is 11km/h more than that
of the passenger train, find the average speed of the two trains.
throne of two sonares is 468 m. If the difference of their perimeters is 24 m,​

Answer 1

Answer:

let the average speed be x

we know that time = speed / distance

Acoordind to Q

average speed - (11 + avearage speed ) = 1( time

so ,

132 / x - 132/ x +11 = 1

take 132 common

1 / x - 1/x +11 = 1 / 132

x + 11 - x / x ^2 + 11 x = 1 / 132

equation formed

132* 11 = x^2 + 11 x

x^2 + 11 x -1452

now this is quadratic equation find x

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