Answer: The total cost of the meal is $130.5. ;
For this case the first thing we must do is define variables. Whe have then: x: payment of the person 1
y: payment of the person 2
We then have the following system of equations:
[tex] x / y = 2/3
x = 52.20 [/tex] We have then that the value of y is:
y = 78.3 Then, the cost of the food is:
x + y = 78.3 + 52.20 = 130.5 ** Answer: **
** The cost of the food is: **
** 130.5**
The total cost of the meal shared between two people in the ratio of 2:3 with one person paying £52.20 is £130.50. This was calculated by finding the value of x from the payment of the first person and then computing the second person's payment. The total was then found by adding both amounts together.
;
pensil = abuku = bpenghapus = ca + 2b + c = 6.5002a + b + 2c = 7.0002a + 2b + c = 8.000a + 2b + c = 6.500 => x22a + b + 2c = 7.000 => x12a + 4b + 2c = 13.0002a + b + 2c = 7.000_________________-3b = 6.000b = 2.0002a + b + 2c = 7.0002a + 2b + c = 8.000________________--b + c = -1.000(-2.000) + c = -1.000c = 1.000a + 2b + c = 6.500a + 2(2.000) + 1.000 = 6.500a + 4.000 + 1.000 = 6.500a + 5.000 = 6.500a = 1.500Jadi harga 1 pensil 1.500 ; 1 buku 2.000 ; 1 penghapus 1.000