Mrs. hara want to purchase blue light blocking glasses for her family. company 1 sells the glasses for $40 each, and company 2 sells the same glasses at 4 for $140. how much will Mrs. hara save, per pair of glasses, if she uses company 2?
If Company 1 sells the glasses for $40 each, and Company 2 sells the same glasses at 4 for $140, then the price per pair of glasses at Company 2 would be $140/4 = $<<140/4=35>>35.
Therefore, Mrs. hara would save $40 - $35 = $<<40-35=5>>5 per pair of glasses if she uses Company 2. Answer: \boxed{5}.
To find out how much Mrs. Hara will save per pair of glasses if she uses Company 2, we need to calculate the price per pair for each of the companies.
For Company 1:
The price per pair is $40.
For Company 2:
Mrs. Hara can purchase 4 pairs of glasses for $140.
So, the price per pair is $140 divided by 4, which is $35.
To calculate the savings per pair, we subtract the price per pair from Company 2 ($35) from the price per pair from Company 1 ($40):
$40 - $35 = $5.
Therefore, Mrs. Hara will save $5 per pair of glasses if she uses Company 2.
To determine how much Mrs. Hara will save per pair of glasses by using company 2, we need to compare the price per pair of glasses for both companies.
Company 1 sells the glasses for $40 each, so the price per pair would be $40 + $40 = $80.
Company 2 sells 4 glasses for $140, so the price per pair would be $140 / 4 = $35.
To find out the amount saved per pair of glasses, we subtract the price per pair from company 2 from the price per pair from company 1:
$80 - $35 = $45
Therefore, Mrs. Hara will save $45 per pair of glasses if she uses company 2.