Rani cate 2
2 part of
a cake while her brother 4/5 of
remaining. Left part of cake is :-
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Let the whole cake be x
rani ate = 2x/7
remaining part = x-2x/7 = 5x/7
brother ate = 4x/7
total eaten part = 2x/7+4x/7 =6x/7
remaining part = x-6x/7
=x/7
i.e 1/7 part is left.
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