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Numerical Ability
Time Distance and Speed
Joke is faster than Paul, Joke and Paul each walk 24 KM. the sum of their speed is 7 Km per hour. And the sum of times taken by them is 14 hours. Then, Joke speed is
option
a) 3 KM/Hr
b) 4 KM/Hr
c) 5 KM/Hr
d) 7 KM/Hr
Read Solution (Total 3)
-
- Ans is 4:
Solution is:speed =dist/time.
let the speed of joke x then speed of paul will be 7-x
(24/x)+(24/7-x)=14;
x^2-7x+12=0
x=3,x=4;
so joke is fater then paul so answer will be 4km/hr
- 10 years agoHelpfull: Yes(28) No(1)
- DISTANCE:J+P=24;SPEED=J+P=7;TIME=J+P=14;TIME TAKEN BY PAUL AND JOKE IS CONSIDER AS 24/7-J+24/J=14 HRS; BY SIMPLIFYING IT WE GET 14J2-98J+168=0 BY SOLVING THIS EQUATION WE GET THE VALUES 4 AND 3.. ACORDING TO THE CONDITION JOKE IS FASTER THAN PAUL JOKE'S SPEED IS 4KMPH...
- 10 years agoHelpfull: Yes(2) No(0)
- 24/(7-x)+24/x=14
equation x^2-7x+12 so solutions 3,4 as x>y so x that is joke speed is 4 km/hr - 10 years agoHelpfull: Yes(2) No(4)
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