RBI Assistant Model Paper 9

Let speed of Suresh be x kmph and speed of Mukesh be y kmph.
ATQ
2 =

300

x

−

300

y

1 =

150

x

−

150

y

..... (i)
⇒

1

2

=

300

y

−

300

2x

1 =

600

y

−

300

x

..... (ii)
From (i) and (ii)

150

x

−

150

y

=

600

y

−

300

x

x

y

=

3

5

Let x = 3a, y = 5a
⇒ 1 =

150

3a

−

150

5a

a = 20
So x = 60 kmph, y = 100 kmph
Required difference = 100−60 = 40 kmph