Question

A train travels a distance of 480 km at a uniform speed. If the speed had been 8 km/h less, then it
would have taken 3 hours more to cover the same distance.
i)what is the formula is used to solve above problem?
a) speed = distance /time
b) A= 1xb
c) an= a1 + d
d) A=2pr
ii) what is the CONCEPT is used to solve above problem?
a) Linear equation
b) Quadratic equation
c) Progression
d) Triangle
iii)if the speed of the train is x km/h, what is the decreased speed from above problem
a)(x-8)km/h
b) (x-7)km/h
c) (X-9)km/h
d) (x-6)km/h
iv) To find the speed of the train, which of the equation to be formed?
a) x2-8x-1280=0
b) x2-6x-1280=0
c) x2-4X-1280=0
d) x2-2x-1280=0
V) What is the speed of the train ?
a)40 km/
b) 50 km/h
C) 60 km/h
d) 70 km/h
PART​

Answer 1

Answer:

x-8

X2

is your answer

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