Page 15 - Digi Notes : Maths - 11.03.2016
P. 15
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18. A man sold two commodities each for the same
price, and on the whole he neither gains nor loses. If he
sold one so as to gain 25%; find the percentage profit or
loss on the other commodity?
100 x : 125
s 100% : s 100%
125% 100 x %
Watch 1 Watch 2
25 % x%
0 %
x% : 25 %
x% 100 x
20 % 125
x 16 2 % 16 2 % loss
3 3
19. In what ratio must water be mixed with pure milk
costing Rs.16 per liter so as to get a mixture costing
Rs.7.50 per liter?
Water Milk
0 16
. 7 50
. 8 50 : . 7 50
Water : Milk 17 : 15
20. How much water be mixed with 30 liters of pure
milk costing Rs.16 per liter so as to get a mixture costing
Rs.7.50 per liter?
www.mahendraguru.com
18. A man sold two commodities each for the same
price, and on the whole he neither gains nor loses. If he
sold one so as to gain 25%; find the percentage profit or
loss on the other commodity?
100 x : 125
s 100% : s 100%
125% 100 x %
Watch 1 Watch 2
25 % x%
0 %
x% : 25 %
x% 100 x
20 % 125
x 16 2 % 16 2 % loss
3 3
19. In what ratio must water be mixed with pure milk
costing Rs.16 per liter so as to get a mixture costing
Rs.7.50 per liter?
Water Milk
0 16
. 7 50
. 8 50 : . 7 50
Water : Milk 17 : 15
20. How much water be mixed with 30 liters of pure
milk costing Rs.16 per liter so as to get a mixture costing
Rs.7.50 per liter?
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