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A mixture of
$40$
liters of milk and water contains
$10$
$%$
water. How much water must be added to make
$20$
$%$
water in the new mixture?
A
$3$
liters
B
$4$
litres
C
$5$
litres
D
$6$
litres
Medium
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Solution
Verified by Toppr
Correct option is C)
$10$
% of water is present in
$40$
liters of milk
Hence milk
$→$
$36l$
and water
$→$
$4l$
$40+x4+x =51 $
(
$20$
%
$=51 $
)
$20+5x=40+x$
$4x=20$
$x=5$
$5$
litres of water must be added
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