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11).let total money the man had be x.
Part of money given to man's wife =²/5
Part of money given to his daughter=⅓
Part of money given to his son=¼
Part of money left =1-(²/5+⅓+¼)
=1-(24+20+15/60)
=1-59/60
=¹/60
Part of money donated in Charity =¹/60
Amount of money donated in Charity=20,000
A/Q
¹/60of x=20,000
¹/60x=20,000
x=20, 000×60
x =12,00,000
12). A certain sim of money is divided among 2 boys and 3 girls.
Part of money received by first boy=²/7
Part of money received by first boy=³/11
Part of money received by both boys = ²/7+³/14
=4+3/14
=7/14
=½
Part of money left =1-½
=½
No of girls =3
Part of money received by each girl = ½/3
=1/2×3
=¹/6
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