Mrs. Hara wants 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 Mrs. Hara uses Company 2, she will pay $140 for 4 glasses.
This means that each glass from Company 2 will cost $140 / 4 = $<<140/4=35>>35.
Therefore, Mrs. Hara will save $40 - $35 = $<<40-35=5>>5 per pair of glasses. Answer: \boxed{5}.
To find out how much Mrs. Hara will save per pair of glasses by using Company 2, we need to compare the prices of the two companies.
Company 1 sells the glasses for $40 each, so the price per pair would be 2 * $40 = $<<2*40=80>>80.
Company 2 sells the glasses at 4 for $140, so the price per pair would be $140 / 4 = $<<140/4=35>>35.
To calculate how much Mrs. Hara will save, we subtract the price per pair from Company 2 ($35) from the price per pair from Company 1 ($80):
$80 - $35 = $<<80-35=45>>45.
Therefore, Mrs. Hara will save $45 per pair of glasses by using Company 2.
To determine how much money Mrs. Hara will save per pair of glasses by using Company 2, we need to compare the prices of the two companies.
Company 1 sells the glasses for $40 each.
Company 2 sells the same glasses at 4 for $140.
To calculate the price per pair of glasses for Company 1, we need to divide the total price by the number of glasses in each pair. Since there is only one glass per pair, the price per pair from Company 1 is also $40.
For Company 2, we need to determine the price per pair by dividing the total price by the number of pairs. Since there are 4 glasses in each pair, the price per pair from Company 2 is $140 divided by 4, which equals $35 per pair.
Now, we can compare the prices per pair from the two companies:
- Company 1 sells each pair for $40.
- Company 2 sells each pair for $35.
To find the savings per pair when using Company 2, we subtract the price per pair from Company 2 ($35) from the price per pair from Company 1 ($40).
Therefore, Mrs. Hara will save $40 - $35 = $5 per pair of glasses by using Company 2.