Latest TCS Aptitude Question SOLUTION: 3 trucks A,B,C A loads 10 kg/min B loads 13 1/3 kg/min C unloads 5kg/min If three simultaneously works then what is the time taken to load 2.4 tonnes

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3 trucks A,B,C

A loads 10 kg/min
B loads 13 1/3 kg/min
C unloads 5kg/min

If three simultaneously works then what is the time taken to load 2.4 tonnes

Asked In TCS dola (11 years ago)

Unsolved Read Solution (7)

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mukesh gupta  (11 years ago)

a loaded in 1 min =10kg
b loaded in 1 min=40/3kg
c unloaded in 1 min=5kg
so a,b,c are loaded in 1 min=55/3kg
so 1 kg loaded by a,b,c in time =3/55min
now, 2.4 tons loaded by a,b,c in time=(3/55)*2.4*1000=131min is ans...........
that is confirm ans plz ckeck this.

Is this solution Helpfull? Yes (57) | No (3)  

Arun Sairam  (11 years ago)

if all three work simultaneously, (10+40/3)-5=(70/3)-5=55/3
its given in kilos/minute... in question it will be asked in kilos/hour...
so for 1 hour ther is 60 minutes... so perform (55/3)*60=1100 tonnes filled in one hour
now 1100 filled in 1 hour so 2400 filled in X hour so we have 1100x=2400
so x=2400/1100=24/11.
same sum may be asked with the numbers changed... know the method and do.

Is this solution Helpfull? Yes (27) | No (14)  

Taruna  (11 years ago)

unloading rate is more then combined loading rate of A and B so can't be loaded

Is this solution Helpfull? Yes (6) | No (38)  

Amardip Gautam  (11 years ago)

Relative speed with which trucks are loaded with the combined effort of A,B and C is=(10+40/3-5)=55/3 kg

Since,A,B & C can load 55/3 kg in 1 min

therefore," " " " " " 1 " " 3/55

Therefore,they can load 2.4 tonnes=2.4*100 quintals=2.4*100*100 kg in ((3/55)*2.4*10000)/60 hr=240/11 hr=21 hr,4 min and 54 sec(approx)

Is this solution Helpfull? Yes (4) | No (8)  

Sivaranjini  (5 years ago)

a=10
b=13 1/3 which is 40/3
c=5(unloading weight)
a+b-c=10+40/3-5 which is 55/3
1min=55/3 kg
1 kg=3/55
time taken to load 2.4tonnes=2.4*1000*3/55=130 mins=2 hrs 10 mins

Is this solution Helpfull? Yes (2) | No (1)  

navakanth  (11 years ago)

abc/a+b-c this gives the how much they do simultaneously

Is this solution Helpfull? Yes (1) | No (9)  

chirag  (11 years ago)

simultaneously 1 min's work=(1/10-40/3-1-5)=397/30
work complete in 30/397 min..
for 2.4 tonnes it take (2400*(30/397))=181 min

Is this solution Helpfull? Yes (1) | No (21)  

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