<h3>Given</h3>
- 5 movies and 2 video games rent for $26
- 3 movies and 8 video games rent for $53
<h3>Find</h3>
<h3>Solution</h3>
Let m and v represent the rental cost of a movie and a video game, respectively. The given information can be expressed in two equations:
... 5m +2v = 26
... 3m +8v = 53
Using Cramer's rule, we can find the solution to be
... m = (2·53 -8·26)/(2·3-8·5) = -102/-34 = 3
... v = (26·3-53·5)/-34 = 5.50
The rental cost for each movie is $3; for each video game is $5.50.
_____
The Vedic math variation of Cramer's Rule tells you the solution to
is ...
- x=(bf-ec)/(bd-ea)
- y=(cd-fa)/(bd-ea)
[a] x = 175 - 7.5p
For a, we are isolating the x variable to one side of the equation.
0.4x + 3p = 70
0.4x = - 3p + 70
x = - 7.5p + 175
[b] x = 115
For b, we are solving for x when p = 8.
x = - 7.5p + 175
x = - 7.5(8) + 175
x = 115
Answer:
33 yrs old
Step-by-step explanation:count up to the year he was born
2. W<5
4. D<6 (or equal to)
