Jordan places two boards end to end to make one shelf. The first board is 47-100 meter long. The second board is 5-10 meter long. What fraction is equivalent to 5-10 and has a denominator of 100.

We have the following fraction:

(5) / (10)

In order not to alter the expression, we must multiply the numerator and denominator by the same factor k:

(5 * k) / (10 * k)

Since we know that the denominator is 100 then:

10 * k = 100

Clearing:

k = 100/10

k = 10

Substituting:

(5 * 10) / (10 * 10)

Rewriting:

(50) / (100)

Answer:

The fraction that is equivalent to 5-10 and has a denominator of 100 is:

(50) / (100)