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4 years, 2 months ago
4 years, 2 months ago
B-1 = 3S .......(1)
B = 4(S-1)......(2)
Solving (1) and (2), We get
B - brother
S - Sister
S = 5
B = 16
Total Childrens B + S = 21
I hope this is correct solution
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