College

Which of these expressions is equivalent to [tex]$5.8 \div 1.15$[/tex]?

A. [tex]$0.58 \div 115$[/tex]
B. [tex]$5.8 \div 115$[/tex]
C. [tex]$58 \div 115$[/tex]
D. [tex]$580 \div 115$[/tex]

Answer :

To determine which expression is equivalent to
[tex]$$5.8 \div 1.15,$$[/tex]
we can begin by eliminating the decimals.

1. Write the division as a fraction:
[tex]$$ \frac{5.8}{1.15}. $$[/tex]

2. Multiply both the numerator and the denominator by 100 to remove the decimals:
[tex]$$ \frac{5.8 \times 100}{1.15 \times 100} = \frac{580}{115}. $$[/tex]

3. Notice that the fraction now is exactly the equivalent of the expression:
[tex]$$ 580 \div 115. $$[/tex]

Thus, [tex]$580 \div 115$[/tex] is equivalent to [tex]$5.8 \div 1.15$[/tex].

The correct answer is the fourth option.