From an equation and solve it ....
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Step-by-step explanation:
2nd Q :-
Let the first consecutive number be x and 2nd number be (x+1)
so x+x+1 = 101
2x = 101-1
x = 100/2 = 50..
So first number = x = 50
and 2nd number = (x+1) = 50+1 = 51
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3rd Q :-
Let Soni's age be x.. so her brother's age =>
8 + 4/5 x
Given:- Brother's age = 32
So ...
8+4/5 x = 32
4/5 x = 32-8
4/5x = 24
x = 24*5/4 = 30
So Soni's age = 30 years...
:D
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