Question

13. You have $19.50 to buy subs for a party. Each sub costs $5.10. Estimate how many subs you can buy. Is your estimate too little or too much?

Answer 1

Let N be the number of subs, then we can write the following relationship:

`5.10\cdot N=19.5`

That is, this equality gives us the number of subs we can buy. If we move 5.10 to the right hand side, we have

`\begin{gathered} N=(19.50)/(5.10) \\ N=3.82 \end{gathered}`

this means that we can buy 4 subs approximately.