Question: Ophelia and Jenna are living in the same apartment building. They each have 2 fewer sofas than chairs. Jenna has 3 times as many chairs as Ophelia. If Ophelia has 20 sofas, calculate the total number of sofas and chairs that they have.
Solve this problem. 
Answer: 
If Ophelia has 20 sofas and 2 fewer sofas than chairs, she has 20+2 = 22 chairs.
Jenna has 3 times as many chairs as Ophelia, a total of 3*22 = 66 chairs
The total number of chairs Ophelia and Jenna have is 66+22 = 88
Since Jenna also has 2 fewer sofas than chairs, the total number of sofas she has is 66-2 = 64 sofas.
The total number of sofas Ophelia and Jenna have is 64+20 = 84 sofas
Together, they have 84 sofas+88 chairs = 172