If you would like to know for how many days will 1/2 of a bag of dog food last, you can calculate this using the following steps:
1 day ... 3 bags of dog food
x days = ? ... 1/2 of a bag of dog food
1 * 1/2 = 3 * x
1/2 = 3 * x /3
x = 1/2 * 1/3
x = 1/6 of a day
The correct result would be 1/6 of a day.
(x+20)/2 = 3x
x+20 = 6x
6x - x = 20
5x = 20
x = 4
Unit rate would be price per 1 pizza. Divide 70 by 9
To find unit cost.
70/9= $7.78 each
We can write this in algebraic terms as:
16+8x = 24+6x
so
2x = 8
x = 4
The number is 4.
35(8) + (46.25 - 35)(8)(1.5) =
280 + 11.25(12) =
280 + 135 =
$ 415 <== total pay