Answer:
A. Division property of inequality.
Step-by-step explanation:
Let be
, we proceed to show the appropriate procedure to step 4:
1)
Given
2)
Compatibility with multiplication/Existence of multiplicative inverse/Associative property/Modulative property/Result. (Division property of inequality)
In consequence, the division property of inequality which states that:
. If
, then:

But if
, then:

Hence, correct answer is A.
If it takes him 90 minutes to read 5 and a half chapters, it would take him 16.36 minutes to read one chapter.
Answer:
135
Step-by-step explanation:
15/100 × 900 = 15 × 9 = 135
10 to the exponent 2 is equal to 100, so 8.7 x 100 is equal to 870