Answer:
She needs to score 82
Step-by-step explanation:
Mean of five test scores = 82
Let the score she got in fifth test = x
![\frac{84+93+91+60+x}{5}=82\\\\\frac{328+x}{5}=82\\\\328+x=82*5\\\\328+x=410\\\\x=410-328\\\\x=82](https://tex.z-dn.net/?f=%5Cfrac%7B84%2B93%2B91%2B60%2Bx%7D%7B5%7D%3D82%5C%5C%5C%5C%5Cfrac%7B328%2Bx%7D%7B5%7D%3D82%5C%5C%5C%5C328%2Bx%3D82%2A5%5C%5C%5C%5C328%2Bx%3D410%5C%5C%5C%5Cx%3D410-328%5C%5C%5C%5Cx%3D82)
The sunglasses were originally priced at $ 21.
Given that Lori brought sunglasses and flip-flops at a half-off sale, to determine, if she spent a total of $ 21 on the two items, what was the original price of the sunglasses (taking into account that they both cost the same) will be you must perform the following calculation:
- 50 = 21
- 100 = X
- 100 x 21/50 = X
- 2100/50 = X
- 42 = X
Thus, the total price of both goods is $ 42, which, divided in half, results in $ 21 (42/2).
Therefore, the sunglasses were originally priced at $ 21.
Learn more in brainly.com/question/731526
Answer:
56
Step-by-step explanation:
Let the x be the amount of money Maria had.
3/7 + 1/4 + 1/8 = 45/56
She spend 45/56 of x.
∴ 45/56 × x = (45/56)x
1 - 45/56 = 11/56
(11/56)x is the money that was left.
This is equivalent to 11.
(11/56)x = 11
11x = 11×56
11x = 616
x = 616/11
= 56.
Maria had #56.