Hello

I have this little problem with exel. I was just wondering is it even possible to do?? Or am I just wasting my time.

if there is a number 25-70 in B1 then number 50 comes to A1 and if there is a number 70-150 in B1 then number 100 comes to A1 and if there is a number 150-250 in B1 then number 200 comes to A1.