TCS
Company
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??
Read Solution (Total 9)
-
- 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. - 12 years agoHelpfull: Yes(48) No(10)
- there should be 85/3 at the place of 55/3....lala
- 12 years agoHelpfull: Yes(17) No(19)
- A=10KG/MIN,B=40/3 KG/MIN,C=-5KG/MIN
SO TOTAL LOAD=55/3 KG/MIN,
2400/(55/3)=131 MIN
- 12 years agoHelpfull: Yes(16) No(2)
- Per min all of them work is (10+13.33-5)=18.33kg/min
Time = (2.4*1000/18.33)min = 130.9min
Answer is 2 Hr 11 Min (app) - 12 years agoHelpfull: Yes(7) No(4)
- i think rahul is confused
- 12 years agoHelpfull: Yes(7) No(2)
- ans is 84 min and 42 sec explained as-
a loaded in 1 min =10kg
b loaded in 1 min=40/3kg
c unloaded in 1 min=5kg
so in 1 min a,b,c loaded= 85/3 kg
that is 1 kg loaded by all a,b,c in 3/85 min
therefore, 2.4 tons loaded by a,b,c in time=(3/85)*2.4*1000= 84 min 42 sec.
so ans is 84 min 42 sec - 12 years agoHelpfull: Yes(4) No(10)
- 131 min is the answer
- 12 years agoHelpfull: Yes(3) No(0)
85/3 kg in 1min
1 kg in 3/85
2400 kg in 3/85*2400=84min and 42sec- 12 years agoHelpfull: Yes(2) No(9)
- @satish plzz check that c unloads @5kg/min
it means loading @ -5kg/min
ur calculation missed -ve sign
so ans=131min - 12 years agoHelpfull: Yes(2) No(1)
TCS Other Question
I was talking to a friend Tammy, the middle child of five. she has a younger sister Tracey, and three
brothers Tommy (oldest child), Timmy and Tony (youngest child). I asked her how old she was, but she
hardly ever gives a straight answer. The following is the conversation we had.
"How old are you Tammy?"
"I am three times as old as Timmy was born. Actually, it's a funny, but Timmy's,tracey's, Tommy's and my
ages were all factors of Mum's age when Tony was born. The only other year where the ages of more than
two of us were factors of Mum's age was when Tracey was half as old as I am now."
"How old is your Mum now?"
"There's another funny thing. when Mum turns 50, tony will be the same age Mum was when she gave birth
to Tommy"
Assuming Tammy was talking in terms of whole years, and with my mathematical and reasoning abilities i
was able to quickly deduce not just Tammy's age, but all of thier ages. so how old are
Tommy,Timmy,Tammy,Tracey,Tony and Mum Now?
a) Tommy is 26, Timmy is 17, Tammy is 16,Tracey is 13, tony is 12 and Mum is 43
b) Tommy is 23, Timmy is 19, Tammy is 18,Tracey is 16, tony is 13 and Mum is 43
c) Tommy is 28, Timmy is 21, Tammy is 23,Tracey is 19, tony is 17 and Mum is 43
d) Tommy is 21, Timmy is 20, Tammy is 19,Tracey is 17, tony is 15 and Mum is 43
My flight takes off at 2am from a place at 18N 10E and landed 10 Hrs later at a place with
coordinates 36N70W.What is the local time when my plane landed? a) 6:00 am b) 6:40 am c) 7:40 am d)
7:00 am e) 8:00 am