Store A is selling it with 20% off. So you have to pay 80% of $699.
80% X $699=$599.20
Store B is selling it with 10% off. So you have to pay 90% of $599.
90% X $599= $539.10
At store A, you have to pay $599.20 while at Store B, you have to pay $539.10. Store B has a better deal because you are paying
$599.20-$539.10=$60.10 lesser. You will be saving $60.10 when you buy at store B.
Hope I helped. :)
