Question

a number is increased by 33 1/3 percent. if the number thus obtained is 400. find the original number

Answer 1

Let the original number be x
Then, x + 100/3×100×x= 400
= x+100x/300=400
= 300x+100x/300=400
= 400x/300=400
= x= 400×300/400
=. x= 300