Question

1a)What was the original price if: after a 10% discount, it became $450

Answer 1

Hi! The answer for the first one is 500
50 times 9=450
10% is 50
50 times 10= 500
The original price was 500.
The discount was $50
For the second one the answer is $10 
The discount was $7
10-7=3
10% is 1 , 30% is 3 and 70% is 7