These questions have driven me absolutely mad, as even with the key, I have been unable to understand the thought process behind the answers.
1.) For three consecutive integers the sum of twice the smallest integer and three times the largest integers is 126. What are the three consecutive integers?
Key answer: 24, 25, 26
2.) A student scored 93 on the first test, 85 ont he second test, and 77 on each of the other tests. The student's average test score for the course is 81.8. If each test is equally weighed, what is the total number of tests taken?
Key answer: 5 tests were taken in total.
3.) Given a and b are nonzero real numbers and |a| = -a and |b| = b, which must be positive?
a.) a-b
b.) a+b
c.) b-a
d.) ab
key answer: b
Please help me understand how these answers have been attained! I'm downright clueless here!!
1.) For three consecutive integers the sum of twice the smallest integer and three times the largest integers is 126. What are the three consecutive integers?
Key answer: 24, 25, 26
2.) A student scored 93 on the first test, 85 ont he second test, and 77 on each of the other tests. The student's average test score for the course is 81.8. If each test is equally weighed, what is the total number of tests taken?
Key answer: 5 tests were taken in total.
3.) Given a and b are nonzero real numbers and |a| = -a and |b| = b, which must be positive?
a.) a-b
b.) a+b
c.) b-a
d.) ab
key answer: b
Please help me understand how these answers have been attained! I'm downright clueless here!!