Discount

Here you go:

 

20000/x=100/10

(20000/x)*x=(100/10)*x      

20000=10*x      

20000/10=x

2000=x

x=2000

what is the formula to calculate 10% of 20,000

 

10% means: 10 / 100 =0.10. Then just multiply:

0.10 x 20,000 = 2,000.