Question

If five mechanical pencils cost #4.27. What scale factor could be used to calculate the cost of 54 pencils

Answer 1

If five mechanical pencils cost #4.27.

we need to find the scale factor used to calculate the cost of 54 pencils

We are given with 5 pencils

We need to find the scale factor for 54 pencils

we need to find out what multiply with 5 to get 54

For that we divide 54 by 5

$\frac{54}{5} = 10.8$

so scale factor is 10.8

5 times 10.8 = 54

We multiply the scale factor 10.8 by cost of 5 pencils to find the cost of 54 pencils

10.8 * 4.27 = 46.116 = $46.12

the scale factor 10.8 is used to calculate the cost of 54 pencils