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Numerical Ability
Time Distance and Speed
Raman drove from home to a neighbouring town at the speed of 50 km/hr and on his return journey, he drove at the speed of 45 km/hr and also took an hour longer to reach home. What distance did he cover each way?
A)450 km
B)225 km
C)900 km
D)500 km
E) None of these
Read Solution (Total 4)
-
- A) 450 km
If distance Raman drove on each way=x km, then
x/45=(x/50)+1
x/9=(d+50)/10
x=450 - 8 years agoHelpfull: Yes(9) No(1)
- x/45-x/50=1
or,(10x-9x)/450=1
x=450 - 8 years agoHelpfull: Yes(5) No(0)
- a) 450
50*x=45(x+1)
5x=45 => x=9
50*9=450 - 6 years agoHelpfull: Yes(0) No(0)
- since distance is constant:
so,speed is inversely proportional to time
given,
s1=50
s2=45
s1/s2=50/45---->10/9
s1/s2=10/9
s1/s2=t2/t1(inversely proportion)
therefore,t1/t2=9/10
distance=s1*t1 or distance=s2*t2
d=50*9 or d=45*10
d=450. - 4 years agoHelpfull: Yes(0) No(0)
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