The ratio of cost price of two articles was 2:3, by selling getting the gain 10% and 20% then what is the percentage of gain
The ratio of cost price of two articles was 2:3, by selling getting the gain 10% and 20% then what is the percentage of gain
A). 15%
B). 16%
C). 17%
D). 18%
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16%
2:3
2x:3x
10 % of 2x = 10/100 * 2x = x/5
20 % of 3x = 20/100 * 3x = 3x/5
x/5 + 3x/5 = (x+3x)/5 ==> 4x/5
=(4x/5)/5x * 100 = 4x/25x * 100 = 16%
Short cut method:
2:3
200 : 300
in 200 = 10% ---> 20
in 300 = 20% ---> 60
20 + 60 = 80 % gain
= 80/500 * 100 = 16%
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