$29.99 is the final price. "y" is the original price. Subtract the savings from the original price to get the final price of $29.99. 70% = 70/100 = .70 y - (y x .70) = 29.99 y - .7y = 29.99 .3y = 29.99 .3y/.3 = 29.99/.3 y = 99.96667 y = $99.97 (rounded)
$29.99 is the discounted price. Since it is a 70% discount, this means it is 100%-70% = 30% of the original price. 30% = 30/100 = 0.3; this gives us the equation
0.3x = 29.99,
where x is the original price.
Solving this, we divide both sides by 0.3:
0.3x/0.3 = 29.99/0.3
x = 99.96666666 ≈ 99.97
This price is for 12 issues; this makes the price of 1 issue
