Respuesta :
Answer:
The answer is 9 shells.
Step-by-step explanation:
Sunday-Saturday is a total of 7 days. If he collected a total of 63 shells, then to figure out how many shells he collected on Tuesday, divide 63 by 7. 63/7 is 9.
The answer is 9 because Sunday to Saturday is 7 days. 63/7 is 9.