Question:
On increasing $\mathrm{a}$, b increases in such a manner that $\frac{a}{b}$ remains--and positive, then $\mathrm{a}$ and $\mathrm{b}$
are said to vary directly with each other.
Solution:
On increasing $a$, $b$ increases in such a manner that $\frac{a}{b}$ remains constant and positive, then $a$ and $b$ are said to vary directly with
each other.