Some villages of a city jointly established a trust for women and child welfare. In a school of the same area, 25 boys and 20 girls of class IX donated Rs. 7000 whereas 30 boys and 15 girls of class X donated Rs. 7500. Find the money donated by each boy and girl. What values are depicted here?
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Let the money donated by each boy be x and by each girl be y25x+20y=7000
5(5x+4y)=5(1400)
5x+4y=1400........(1)
30x+15y=7500
15(2x+y)=15(500)
2x+y=500.......(2)
(1)-4×(2)
5x+4y=1400
-8x-4y=-2000
-3x=-600
x=200
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2x+y=500
400+y=500
y=100
Money given by each boy is 200 and each girl is 100