maths
posted by tina on .
1.two houses are bought for rupees 65000 each. the first is sold at a profit of 8% . if the average price received for each house is rupees 66300,find the gain or loss % on the second house.
2. a shopkeeper sells sugar in such a way that the selling price of 950gm is the same as the cost price of 1kg. find his gain %.

P1 = 1.08*65000 = 70200.
(P1+P2)/2 = 66,300
(70,200+P2)/2 = 66300
70200+P2 = 132,600
P2 = 62400
Loss = 6500062400 = 2600
%Loss = 2600/65000 = 0.04 = 4%.
2. 1kg/0.95kg = 1.0526 = 105.26 %.
%Gain = 105.3%  100% = 5.3%.