Question

A women has a certain number of mangoes of which 14%are bad.She gives 80%of the remainder in charity and then has 258 left.How many had she at first?

Answer 1

Let the number of mangoes be a.
So, at first she removed bad ones=a -14a/100=0.86a.
From that 80% is given =0.86 -86*0.86*a/100 =0.172 a
So, she has 258 left
i.e 0.172 a=258
a=258000/172
a=1500