wrong Answer (Question: 108216.0 )

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SATYADEO RAUT

· started a discussion

· 1 Months ago

wrong Answer (Question: 108216.0 )

i think 4:5 is the right answer..

Shashank Shah

· commented

· 1 Months ago

16:25 is correct

Sohil Rajput

· commented

· 1 Months ago

tumhare think karne se kuch nahi hoga bhai

Gaurav Bhardwaj

· commented

· 1 Months ago

unka answer sahi h

This topic is not avialable

pawan

· started a discussion

· 1 Months ago

wrong answer (Question: 108216.0 )

the mixture is withdrawn 2 times

Question:

A vessel contain 20 litres of acid. 4 litres of acid is taken out of the vessel and replaced by the same quantity of water. Again 4 litres of the mixture is withdrawn, and again the vessel is filled with the same quantity of water. The ratio of the quantity of acid left in the vessel with the quantity of acid initially in the vessel is:

Options:

A) 1 : 5

B) 4 : 5

C) 4 : 25

D) 16 : 25

Solution:

Ans: (d)

Required ratio = \(\cfrac{20\left (1- \cfrac {4}{20} \right )^2}{20}=\cfrac{16}{25}\)

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