A party rental company has chairs and tables for rent. The total cost to rent 3 chairs and 4 tables is $47. The total cost to rent 12 chairs and 2 tables is $35. What is the cost to rent each chair and each table?

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!