The regular price of a Space Invader game is $30, but it is on sale. The discount is $15. What percent discount is this?

50%

Step-by-step explanation:

15=30x

x=0.5

x=50%

50% Discount

Step-by-step explanation:

So look to get the discount do the math like this:

30 rupees discount is 15 rupees

∴1 rupees discount is 15/30 rupees

∴ 100 rupees discount is 0.2×100 rupees

                                      ⇒50 Rupees

∴The Discount is 50%(Ans:)