Question

A number when 35 is subtracted from it reduces to its 80% ,find 4/5th of that numbers?

Answer 1

From x we subtracted 35 so it reduced 80% of it
So equation is 
x-35=x*80/100

 

x-35-4x/5

 

multiply with 5 to both sides

 

5x-175=4x

 

subtract 4x form both sides and add 175 to both sides

 

x= 175

 

now 4/5 of 175=140

 

I hope you understand it