The average of five numbers is 18. let the first number be increased by 1, the second number by 2, the third number by 3, the fourth number by 4, and the fifth number by 5. what is the average of the set of increased numbers?

It sounds like initially we have a total of 18*5 = 90. Then we are adding 5 + 4 +3 +2 +1 to this.
so that gives us 105.

105/5 = 21

There would be 36.35 pounds

The question is kind of confusing. if it's asking how many variations of answers can you give. then do 4^5 for your answer.this would be something like the first question could be a and the 2nd c or first b next c etc. if you can, ask the teacher for a better confirmation of what it's asking. if i'm assuming correctly what it's asking, it's 625 different variations.