She is better off by $40,
Please kindly go through the explanation section for rest of the answers.
From the Question,
Grocery saving = 40%
Laptop saving = 2.5%
Absolute saving in grocery = $4
Absolute saving in Laptop =$10
Yes he should sacrifice 20 mins to save $10 since he does the same for less savings
Since Ted is depositing money for only 6 months at 10% interest rate, he is giving up half his annual interest of (0.1*750)/2 = $37.5
Interest accrued on student loan = 0.07*2000 = $140
Interest on credit card = $75 + (0.07*1500) = $180
She is better off by $40.
A. Grocery= 40%, Laptop= 5%
B. Grocery= $4, Laptop= $10
A. The percentage savings for grocery
= $4/$10 x 100 = 40%
The percentage savings for laptop
=$20/$400 x 100 = 5%
C. Considering the value of the saving, Samir should be more willing to sacrifice 20 minutes of his time to save to save $10 because a $20 dollar savings has higher economic value.
(A) In percentage terms,
Savings on the grocery item:
Savings on the laptop:
(B) In absolute terms,
savings on the grocery item = $4
savings on the laptop = $10
(C) Yes, he should sacrifice 20 mins to save $10 since he does the same for less savings. Hence, he should also sacrifice his time to save $10 from laptop which is greater than the savings from grocery item.