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5Â years, 1Â month ago
I have thrice as many brother's as my sister's and my sister usha has four times as many brother's as sisters, How many children do my parents have?
5Â years, 1Â month 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