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REASONING AND QUANTITATIVE APTITUDE Time & Distance<br />
9.) Sachin can cover a distance in 1hr 24min by covering 2/3 of the distance at 4 kmph<br />
and the rest at 5kmph.the total distance is?<br />
A. 5km B. 6km C. 7km D. 8km<br />
Answer: Option D<br />
Explanation:<br />
SITAMS<br />
Distance = 2/3S<br />
distance=1-2/3S=1/3S<br />
21/15 hr=2/3 S/4 + 1/3s /5<br />
84=14/3S * 3<br />
S= 6km<br />
10.) A person walks at 5kmph for 6hr and at 4kmph for 12hr.The average speed is.<br />
A. 4 1/3 B. 7 2/3 C. 9 ½ km D. 8km<br />
Answer: Option D<br />
Explanation:<br />
Avg speed = total distance/total time<br />
= 5*6 + 4*12 / 18<br />
=4 1/3 mph<br />
11)A person covers a certain distance at 7kmph .How many meters does he cover in<br />
2 minutes.<br />
A) 14 kmph B) 7 kmph C) 2400m D) 1200m<br />
Answer: Option C<br />
Explanation:<br />
Speed=72kmph=72*5/18 = 20m/s<br />
Distance covered in 2min =20*2*60 = 2400m<br />
12)If a man runs at 3m/s. How many km does he run in 1hr 40min<br />
A) 18 km B) 7 km C) 12 km D) 17 km<br />
Answer: Option A<br />
Explanation:<br />
Speed of the man = 3*18/5 kmph = 54/5kmph<br />
Distance covered in 5/3 hrs=54/5*5/3 = 18km<br />
13)A train covers a distance in 50 min ,if it runs at a speed of 48kmph on an average.The<br />
speed at which the train must run to reduce the time of journey to 40min will be.<br />
A) 18 kmph B) 60 km ph C) 30 kmph D) 50 kmph<br />
Answer: Option B<br />
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