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16 Nov 2023, 02:30
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A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
95%
(hard)
Question Stats:
50% (02:18) correct
50%
(02:37)
wrong
based on 205
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A man buys milks at $85 per liter and dilutes it with water. He sells the mixture at the same rate at gains a 11.11%. Find the quantity of water mixed by hi in every liter of milk.
A. 0.111
B. 0.909
C. 0.1
D. 0.125
E. 0.9
A. 0.111
B. 0.909
C. 0.1
D. 0.125
E. 0.9
20 Nov 2023, 11:34
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let's consider x portion water is added to 1 liter milk
after mixing:
milk + water -> mixture
1lt + xlt -> (1 + x) lt
85 + 0 -> 111/100 * 85
actual cost -> selling price
(1 + x)85 = 111/100*85
x = 111/100 - 1
x = 11/100
11% water is mixed
after mixing:
milk + water -> mixture
1lt + xlt -> (1 + x) lt
85 + 0 -> 111/100 * 85
actual cost -> selling price
(1 + x)85 = 111/100*85
x = 111/100 - 1
x = 11/100
11% water is mixed
03 Jan 2025, 22:59
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A man buys milks at $85 per liter and dilutes it with water. He sells the mixture at the same rate at gains a 11.11%.
Find the quantity of water mixed by him in every liter of milk.
Let the quantity of water mixed by him in every liter of milk be x.
Water = x liters
Milk = 1 liters
Total = x+1 liters
In 1 liter mixture:-
Milk = 1/(1+x)
Water = x/(1+x)
Total = 1 liter
He sells the mixture at $85 per liter which is his milk cost price
He sells 1 liter of mixture = 1/(1+x) liters of milk at $85
Sales price of 1 liter of milk = $85/{1/(1+x)} = $85(1+x)
Cost price of 1 liter of milk = $85
%profit = {$85(1+x)/$85 - 1}*100% = 11.11%
x*100% = 11.11%
x = .1111
IMO A
Find the quantity of water mixed by him in every liter of milk.
Let the quantity of water mixed by him in every liter of milk be x.
Water = x liters
Milk = 1 liters
Total = x+1 liters
In 1 liter mixture:-
Milk = 1/(1+x)
Water = x/(1+x)
Total = 1 liter
He sells the mixture at $85 per liter which is his milk cost price
He sells 1 liter of mixture = 1/(1+x) liters of milk at $85
Sales price of 1 liter of milk = $85/{1/(1+x)} = $85(1+x)
Cost price of 1 liter of milk = $85
%profit = {$85(1+x)/$85 - 1}*100% = 11.11%
x*100% = 11.11%
x = .1111
IMO A
