Official Quant thread for CAT 2013

A and B run a 5 km race on a round course of 400 m. If their speeds are in the ratio 5 : 4, then how many times will the winner of the race pass the other participant?

a 5 times
b 3 times
c 4 times
d 2 times @Estallar12 @jain4444
@Estallar12 Can you provide an answer in terms of the chapter "percentages"???
@Estallar12 said:
Let productions be A and B.=> (A+B)/5 = A/10 + B/4=> A : B = 1 : 2.
Can you provide an answer in terms of the chapter "percentages"???
@Subhashdec2 said:
bhai repetition to allowed nahi hand if it were tab 4! nahi 4^3 ho jata wo
bhai i was pretty sure abt this but now that u say mein chk karunga...coz abhi mein sure nahi hun (bhool gaya hun)....and ye kahan hai ki digits repeat nahi ho rahi?

@ani6 said:
PLZ HELP...Aakash, bhanu and sam work on a project for some days ,after they complete 1/4th of the work sam takes a break,For 7 days only akash and bhanu work on a project.After that sam relieves both of them.He completes the project in 5 days.bhanu works 50% faster then aakashand sam alone can complete the project in 20 days,How long would bhanu take to finish the entire project????ans:23 1/3
Let Akash works at a rate of 1/x units/day,
so Bhanu will work at a rate of 1/x+1/2x=3/2x units/day
sam given 1/20 units/day

1/4th work already done,so for remaining work
7(1/x+3/2x)+5(1/20)=3/4
x
=35 days so for bhanu 2/3x days =70/3 ans
@Logrhythm said:
bhai i was pretty sure abt this but now that u say mein chk karunga...coz abhi mein sure nahi hun (bhool gaya hun)....and ye kahan hai ki digits repeat nahi ho rahi?
likha h yaar check the ques
@jashholmes said:
@Estallar12Can you provide an answer in terms of the chapter "percentages"???
@jashholmes said:
Can you provide an answer in terms of the chapter "percentages"???
Solution using percentages, you mean ? :splat::splat:
@falcao said:
A and B run a 5 km race on a round course of 400 m. If their speeds are in the ratio 5 : 4, then how many times will the winner of the race pass the other participant?

a 5 times
b 3 times
c 4 times
d 2 times @Estallar12 @jain4444
bhai r u sure its a 5km race?
usme to zyada baar pass kar jaega yaar
@Subhashdec2 said:
likha h yaar check the ques
lagta hai aaj mera dinn nahi hai..
@Subhashdec2 -haan bhai.mera 2 aa raha hai.
@Estallar12 said:
Let productions be A and B.=> (A+B)/5 = A/10 + B/4=> A : B = 1 : 2.
It's wrong, the answer is 2:1 and not 1:2!!!
Secondly, if you take A as production of 10% and B as production of 25%, then also the answer comes out to be 1:2!!!
@Subhashdec2 said:
likha h yaar check the ques
lagta hai aaj mera dinn nahi hai..
@Estallar12 said:
Solution using percentages, you mean ?
Yes!!!
@falcao said:
A and B run a 5 km race on a round course of 400 m. If their speeds are in the ratio 5 : 4, then how many times will the winner of the race pass the other participant?a 5 timesb 3 times c 4 timesd 2 times@Estallar12@jain4444
Speeds in ratio 5:4 => When A completes 5 rounds, they meet once.!!
A covers 2 km in 5 rounds, so 2 times they will cross in 5 km Race. 😲
I have a box .the top has an area 240 square inches the side 300 sqinch and the end 180sqinch.What is the depth of the box?
@Estallar12 said:
Haha!Nahin. Thoda headache and sleepy may be! Anyways, Spam nahin karte hain.Question. -A certain calculator has a faulty display which can display only the digits 1,2,3 and 4. Find the sum of all the four digit numbers with distinct digits that the calculator can display? a) 66660b) 44440c) 22000d) 33330e) none of these.
66660
3!*(1 + 2 + 3 + 4)(1111) = 66660
@Estallar12 -thanks a lot sir.fb pe ek group tha,jahan ek banda 3 bol raha tha anser.mera khud ka 2 aaya,then i thought it is best to ask the GOD himself
@Estallar12 said:
Speeds in ratio 5:4 => When A completes 5 rounds, they meet once.!!
A covers 2 km in 5 rounds, so
2 times
they will cross in 5 km Race.
yaar ye logic samajh ni aaya
explain karna thoda
according to me when A covers 500 m B covers 400 and B would have returned to the starting point
aise to har round mein milenge wo
@jashholmes said:
It's wrong, the answer is 2:1 and not 1:2!!! Secondly, if you take A as production of 10% and B as production of 25%, then also the answer comes out to be 1:2!!!
What ? Wait.

I am solving it again in terms of percentages. That is how you want right. Gimme a minute!
@pavimai said:
range is not mentioned..Options3627129
9
a=1,b=1,c=5 3!/2=3
a=1,b=2,c=3 3!=6
3+6=9