A diner has 645 napkins. 325 napkins are used at lunch. 113 napkins are used at dinner.
Melanie says that 325−113=n
napkins are used in all, and that 645−212=r
napkins are left.
Is her answer reasonable? Explain why or why not.
Part A
Is her answer reasonable?
(1 point)
Responses
No, because at least 325 napkins are used. So, 212 is too small a number for n.
No, because at least 325 napkins are used. So, 212 is too small a number for n .
No, because she adds the number of total napkins used to find n.
No, because she adds the number of total napkins used to find n .
No, because she makes an error in her subtraction.
No, because she makes an error in her subtraction.
Yes, her answer is reasonable.
Yes, her answer is reasonable.