Question

Coach George went to a store to buy mouthguards. The following packages of mouth guardsare available at this store.10 mouth guards for $14.5015 mouth guards for $22.50Coach George needs to buy 60 mouth guards.How much money will he save by purchasing 60mouth guards in packages with the lowest unitprice compared to the highest unit price?

Answer 1

We will find that out as follows:

*We determine the cost of buying the 60 mouth guards in both cases and then subtract the smallest value from the greatest:

`x=(60\cdot14.50)/(10)\Rightarrow x=87`

&

`x=(60\cdot22.50)/(15)\Rightarrow x=90`

[These calculations are respectively]

So, we can see that he would save:

`s=90-87\Rightarrow s=3`

So, he would save $3 in total.