Question

Four identical pens cost N dollars. How many would K pens cost?

Answer 1

Answer:

$k\ pen = \frac{\ Nk}{4}$

Step-by-step explanation:

Given

Cost of 4 pens = $N

Required

Determine the cost of K pens

First, we need to determine the cost of 1 pen

$4\ pen = \ N$

Divide through by 4

$\frac{4\ pen}{4} = \frac{\ N}{4}$

$1\ pen = \frac{\ N}{4}$

Multiply through by k to determine the cost of k pen

$k * 1\ pen = \frac{\ N}{4} * k$

$k\ pen = \frac{\ Nk}{4}$