How would you do this problem 3 6/7 - 1 2/3

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?

Due to a packaging error, 4 cans labeled diet soda were accidentally filled with regular soda and placed in a 12 pack carton of diet soda. two cans were randomly selected from this 12 pack. what is the probability that both cans were regular soda?

Aright triangle has an area of 21 m2. the dimensions of the triangle are increased by a scale factor of 4. what is the area of the new triangle