Final answer:
To find the value of X in the equation 15/8 = 80/X, cross multiply and solve for X.
Step-by-step explanation:
To find the value of X in the equation 15/8 = 80/X, we can cross multiply. Cross multiplying gives us 15X = 8 * 80. Simplifying further, we have 15X = 640. To solve for X, we divide both sides of the equation by 15, which gives us X = 640/15 = 42.67 (rounded to two decimal places).