Answers

2015-02-10T20:06:51+05:30
A = 240-b
c = 500-d
240-b + 500-d = 215
740-b-d = 215
d-b + 500-d= 455
-b= 455-500
b = 45

740- 45 + 500 - d = 215
1195 - d = 215
-d = 215 - 1195
d = 980
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2015-02-11T02:17:21+05:30
A+b = 240, c+d = 500
d-b+c = 455
d+c = 455+b
a+c = 215
455+b = 500
b = 45
a = 195
c = 20
d = 480

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