A mixture of 40 L of alcohol and water contains 10% water. How much water should be added to this mixture so that new mixture contains 20% water (in litres)?
a)
5
b)
6
c)
7
d)
8
A mixture of 40 L of alcohol and water contains 10% water. How much water should be added to this mixture so that new mixture contains 20% water (in litres)?
a)
5
b)
6
c)
7
d)
8
Question ID - 55869 | SaraNextGen Top Answer
A mixture of 40 L of alcohol and water contains 10% water. How much water should be added to this mixture so that new mixture contains 20% water (in litres)?
a)
5
b)
6
c)
7
d)
8
|
A mixture of 40 L of alcohol and water contains 10% water. How much water should be added to this mixture so that new mixture contains 20% water (in litres)? |
|||||||
|
a) |
5 |
b) |
6 |
c) |
7 |
d) |
8 |
1 Answer
127 votes
Answer Key / Explanation : (a) -
Quantity of water in 40 L of mixture =
Let quantity of water added be 
litres.
Then % of water in the resulting mixture = 
⇒
litres
127 votes
Answer Link
127