Tommy goes swimming every 12 days and hiking every 5 days. He did both today, how many days from now will he do both again? How many times in a year does he do both?

The first week samantha learned to read braille, she could read 10 words per minute. in the second week she increased her speed by 20%. in the third week she increased her speed again by another 25%. how many words could she read per minute by the third week? hurry and tell me!