Question

One calculator is discounted by 30% and now costs $42

another is discounted by 25% and now costs $42 dollars as well
which calculator had the cheaper original price? How much cheaper?

Answer 1

X*0.3 = 42
X=42/0.3 = 140

X*0.25 = 42
X=42/0.25 = 168

168-140= 28

30% one by 28.