Mathematics for IGCSE & O level - Proportion (Section 1 - No. 30)
The number of pages in a book, *p*, is inversely proportional to the number of words on each page, *w*. Which equation correctly describes this relationship?
p = kw
pw = k
p/w = k
w = kp
คำอธิบาย
If two variables are inversely proportional, their product is a constant (k).