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2) Lisa is ordering sand from the Internet, On one site she found sand on sale for

$2.25 per pound, and on the second site she found 5kg of sand on sale for $14.

Which is a better deal?

Respuesta :

carlosego

For this case we must find the unit cost (dollars per pound) of each site and then compare.

We take into account that:

1kg equals 2.205 pounds

So, we have:

Site 1:

[tex]C = 2.25 \frac {dollars} {pound}[/tex]

Site 2:

[tex]5kg = 5 (2.205\ pounds) = 11.025 pounds[/tex]

So, the unit cost is:

[tex]C = \frac {14} {11.025} \frac {dollars} {pound} = 1.27 \frac {dollars} {pound}[/tex]

Thus, the best deal is on site 2.

ANswer:

The best deal is on site 2.

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