Question

90% of a number plus 40 gives the same number, so what's the number?

Answer 1

Answer:

I think 36

but not sure .

If it is right so ok.

if it is not right so sorry.

Answer 2

Answer:

400

let the number be x

90% of x + 40= x

(90x/100)+40=x

90x+4000=100x

100x-90x=4000

10x=4000

x=4000/10=400