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Logical Reasoning
person completes a journey in 15 hours, the first half at 12 kmh
"1 and the second half at 18
kmh
"1
. What is the total distance
Read Solution (Total 4)
-
- (x/2)/12 + (x/2)/18 = 15
or
(3x+2x)/72 = 15
or
x=216 km - 10 years agoHelpfull: Yes(2) No(0)
- Let total distance be x
x/2 is covered at 12 kmph and remaining x/2 at 18kmph
distance / speed = time
x/(2*12) + x/(2*18) = 15
x/24 + x/36 = 15
(3x+2x)/72 = 15
5x/72 =15
x = 15*72/5
= 216km
- 10 years agoHelpfull: Yes(0) No(0)
- total time is 15 hr.
let total distance is x km.
So,
15=x/24 + x/36
=>x=216
So, total distance is 216 km - 10 years agoHelpfull: Yes(0) No(0)
- average speed=(2*S1*S2)/(S1+S2)
on solving,avg speed=72/5
total distance=72/5*15=216 - 10 years agoHelpfull: Yes(0) No(0)
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