Latest HCL Aptitude Question SOLUTION: If takes 25.5 minutes to download a file using Modem A. Modem B work at 17% of the speed of Modem A. How long does it take to download a file using a Modem B?

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If takes 25.5 minutes to download a file using Modem A. Modem B work at 17% of the speed of Modem A. How long does it take to download a file using a Modem B?

Asked In HCL (10 years ago)

Solved Ann Theressa Read Solution (6)

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Read Solution (6) :

Ann Theressa  (10 years ago)

150 minutes

Let Speed of modem A be k
So Speed of modem B is 17/100*k

Time taken by modem A = 25.5 minutes
Let time taken by modem B = x

k*25.5 = 17/100*k*x
0.17*x = 25.5
x = 25.5/0.17
= 150 minutes

Is this solution Helpfull? Yes (33) | No (6)  

Devendra Marghade  (10 years ago)

150 minutes
Download by Modem A in 1 min.=1/25.5= 2/51
Download by Modem B in 1 min.=(2/51)*(17/100)=2/300=1/150
So Modem B will take 1/(1/150)=150 minutes

Is this solution Helpfull? Yes (27) | No   

RUPESH KUMAR  (10 years ago)

150 min 25.5*x=(17/100)*x*y
y=150

Is this solution Helpfull? Yes (3) | No (1)  

AJAY  (10 years ago)

B finishes at 17% speed that of A.
so to find time taken by B : 25.5/.17 = 150 min

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

SUDHAKAR YADAV  (10 years ago)

Explanation :
suppose: A's efficiency per minute is 100X unit
then total work done by A is :100X*25.5=2550 unit
now B works 17% of A so B's efficiency per minute is: (100*17)/100=17x
total work in unit is=2550
so B will complete it =2550/17-->150 minute
..............................
Answer :150 minutes

Is this solution Helpfull? Yes (1) | No   

aditi ojha  (9 years ago)

let efficiency of modem A be x
then efficiency of modem B = 0.17x
when efficiency is x time = 25.5 min
when efficiency is 0.17x time = 25.5* 0.17
so, ans = 4.335 minutes

Is this solution Helpfull? Yes (1) | No (3)  

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