Latest TCS Aptitude Question SOLUTION: Fresh grapes certain 90% water by weight while dried grapes certain 20% water by weight. What is the weight of any grapes available from 20kg of fresh grapes?

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Fresh grapes certain 90% water by weight while dried grapes certain 20% water by weight. What is the weight of any grapes available from 20kg of fresh grapes?

Asked In TCS Deblina Manna (10 years ago)

Unsolved Read Solution (12)

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Read Solution (12) :

PARAG KAMRA  (10 years ago)

20 kg of fresh grapes contains 18kg(90% water) of water and 2 kg(20% water) of flesh
a dry grapes contains:
As only water looses the weight so flesh's weight remains the same
so
"Dried" grapes contain 20% water. So 80% of the weight of "dried" grapes is not water.
flesh =2 kg (80% of the dried grapes)
water =.5 kg (20% of dried grapes)

2.5kg ans

Is this solution Helpfull? Yes (21) | No (3)  

Akshay Hanswal  (10 years ago)

See in 20kg of fresh grapes we have 2kg grapes and 18kg of water.
Now when the grapes are dried water is reduced not the grape i.e. 2kg remaines 2kg grapes.
So in new quantity we know the weight of grapes i.e 2kg which is its 80% since 20% in dried grapes is water.
let weight of dried grapes be x
so, 80% of x=2kg that is x=2.5kg.

Is this solution Helpfull? Yes (6) | No   

way  (10 years ago)

Understood till 2kgs...
unable to understand .5kg concept.
Someone please explain

Is this solution Helpfull? Yes (5) | No (3)  

saswat nanda  (10 years ago)

20 kg of fresh grapes contains :
water:18 kg (90% of fresh)
flesh:2 kg (10% of fresh)
dry grapes contains:
As only water looses the weight so flesh's weight remains the same
so
flesh =2 kg (80% of the dried grapes)
water =.5 kg (20% of dried grapes)
2.5kg ans

Is this solution Helpfull? Yes (3) | No   

VIKASH KUMAR SHARMA  (10 years ago)

this is the qstn of only fresh grapes not for dried one, thrfor in 1 fresh grape 90% is water ,
thrfor 10% is the grape, thrfor 10% of 20 kg fresh grapes= 2kg.(ans)

one special thing to know for all of u, in this qstn no one can calculate the weight of any grape. thts the truth

Is this solution Helpfull? Yes (2) | No (3)  

Chandra Bhatt  (10 years ago)

2.5 Kg dry grapes(.5 kg water).

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

Suyash Kunawat   (10 years ago)

nhi aya samaj me can anybody elaborate it

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

Guru Pranav  (10 years ago)

20 kg fresh grapes will contain 2 kg of grapes and 18 kg water.
In dried grape, grape concentration is 80%; that implies 2kg should be taken as 80%. So, total weight of dried grape is 2.5kg.

Is this solution Helpfull? Yes (1) | No   

divyasha  (10 years ago)

20 kg of fresh grapes contain 20*90%=18kg of water
and it will contain pulp =20-18=2kg
if fresh fruit is dried water evaporates and pulp remains as it is
let the dry grapes obtained be x
so we can write
(100-20)%of x=2 (because dry fruit contain 20% of water )
on solving we get x=2.5kg /////// this is the answer
(100-20)%

Is this solution Helpfull? Yes (1) | No   

jyothi Am  (10 years ago)

@parag kamra can u pls explain how u got 0.5?

Is this solution Helpfull? Yes | No (3)  

lavanya  (10 years ago)

Pls explain how u got .5 for the water

Is this solution Helpfull? Yes | No (1)  

yashu gupta  (8 years ago)

when there is common gain or loss formula is (X/10)^2..on solving u will get 1 as answer thnx

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