One half the sum of two numbers equals their difference. What are the numbers if their sum is 56

The vet charges $45 for an office visit and $10 for each vaccination your dog needs. write an eaquation

Money off coupons have been circulated to 300 households. only 2/5 of these were redeemed (used) in the local supermarket to get a free shampoo. what fraction of coupons were unused? (ps: write how you got the answer)

Kerion has a beaded necklace business. she can make 12 necklaces is 2 hours. how long will it take her to make 9 necklaces?