Respuesta :
Answer:
Correct option is:
A. 6 + 7 = 13
Step-by-step explanation:
There are 6 days until Richard's concert.
i.e. After 6 days there will be Richard's concert
Susie's concert is 7 days after Richard's.
i.e. After 6+7=13 days there will be Susie's concert
Hence, Correct option is:
A. 6 + 7 = 13