• #### CDS Exam ELEMENTARY MATHEMATICS Study Material

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a) 23s
b) 28s
c) 24.6 s
d) 26s

a) 60
b) 62.5
c) 70
d) 80

a) 250 m
b) 300 m
c) 225 m
d) 275 m

a) 20s
b) 25s
c) 32s
d) 26s

a) 60
b) 40
c) 30
d) 35

a) 50m
b) 74.5m
c) 100m
d) 60m

a) 6km
b) 9km
c) 8km
d) 7km

a) 135 km/h
b) 120 km/h
c) 125 km/h
d) 140 Km/h

a) 48 km/h
b) 50 km/h
c) 45 km/h
d) 40 km/h

a) 70km/h
b) 85km/h
c) 90 km/h
d) 100 km/h

##### Solution Is : Distance covered by the train in 4.5 hr =80*45 km=360 km Now ,to cover this distance is 4 h,the speed of the train = 360/4 =90 km/h
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