Question 30(a): Let x be the price of one pencil (in Ksh). A pen costs Ksh 4 more than a pencil. i) Write an expression for the price of one pen. ii) Write an expression for the price of one pencil.

Here's a step-by-step solution for Question 30:

Question 30(a):
Let $x$ be the price of one pencil (in Ksh).
A pen costs Ksh 4 more than a pencil.

i) Write an expression for the price of one pen.
Price of one pen = $x + 4$

ii) Write an expression for the price of one pencil.
Price of one pencil = $x$

Question 30(b):
The question states: "Above and hence solve for x."
However, no equation is provided in part (a) or explicitly stated in part (b) that allows us to solve for $x$. Without an equation, $x$