Get clear, concise, and accurate answers to your questions on IDNLearn.com. Join our Q&A platform to access reliable and detailed answers from experts in various fields.

Lena has two coupons for shoes.
Coupon A: 30% off of $63 shoes
Coupon B: S22 rebate on $63 shoes
Choose the coupon that gives the lower price,
Then fill in the blank with the correct value.