RRB Paramedical Staff Nurse Model Paper 5

Question : 46 of 100

Marks: +1, -0

The distance between Riya’s home and Railway station is 80 km . She was late by 1 hour to reach Railway station to get the train therefore she increased her speed by 4km/h, then What is her increased speed?

16 km/hr
20 km/hr
15 km/hr
19 km/hr

Validate

Solution:

Let the normal speed of Riya be xkm/hr , then

[80{/}x]−[80{/}(x+4)]=1

x^2+4x−320=0

(x+20)(x−16)=0

x=16

km/hr

x+4=20

km/hr

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