The answer is [tex] \frac{50}{100} = \frac{n}{70} [/tex]
Explanation:
50% is equal to 50/100 and the variable (n) is the unknown "half" over 70. Though you aren't actually solving it, a way to test it would be multiplying 50 by 70 (cross multiplication) and n by 100. 50 x 70 = 3,500 divided by 100 (variable x 100) equals 35, which is half of 70.
Hope I helped!
