Set it up X/15=60/100 cross multiply to set up an equation 100X=900 and X=9. then you add 9 to 15 to get 24.
A fraction isn't always rational. Now usually numbers like

e, Eulers number
The Golden Ratio

These would be considered Irrational. Although the answer for this is a rational number (a number that has an end, or can be written out to put it simply.).
I hope this helped :)
first off, let's put 8y - 5x = 11, in a slope-intercept form, so we can see what's its slope

so the slope of this line is 5/8, well then

<h2>
Answer:</h2>
The statement that is true about the radius of a sphere is:
The radius is a line segment from the center point to the surface of the sphere.
<h2>
Step-by-step explanation:</h2>
We know that the radius of a circle/sphere is a line segment that joins the center of circle/sphere to any point on the circumference/ surface of the circle/sphere.
Also, in a circle the radius is the length such that each point on the circumference are equidistant from the center of the circle.