Question

a fruit seller had some apples he sells 40% of them and still has 420 apples find the number of Apples he had originally

Answer 1

let the original apples be x
60%of x=420
3/5×x=420
x=420×5/3
x=700

Answer 2

Let x be the original no. of apples
Hence
Selling 40%
x-(x×40/100)=420
x-2x/5=,420
5x-2x/5=420
3x/5=420
x=420×5/3=700
He had originally 700 Apples