Answer:
Step-by-step explanation:
There may be other acceptable answers here, but......I think it's possible that she is 66....
The grandson is 1 when she is 61 ......61 times his age
When he is 2, she is 62.......31 times his age
When he is 3, she is 63..... 21 times his age
When he is 4, she is 64.....16 times his age
When he is 5, she is 65..... 13 times his age
When he is 6, she is 66,.....11 times his age
