Let cheese wafers = x
chocolate wafers = y
we know they bought 20 total packets so x+y = 20, this can be re-written as x = 20-y
cheese wafers cost 2, so we have 2x
chocolate wafers cost 1, so we have 1y, which is just the letter y
so we know 2x + y = $25
replace x with x=20-y to get:
2(20-y)+y = 25
distribute the parenthesis:
40-2y +y = 25
combine like to terms to get:
40-y = 25
subtract 40 from each side"
-y = -15
divide both sides by -1
y = 15
chocolate wafers was y so they bought 15 chocolate wafers
cheese wafers was x, so they bought 20-15 = 5 cheese wafers
using the substitution method was the easiest way to isolate one of the variables in order to find the solution.
Origami Kit
8 X 18 = 144
divide by 6 students so 144/6 = $24 each
1/8 teaspoon saffron or ground turmeric
Rudy will buy 3 Ivory Silk Lilac trees; $4
22 × 3 = 66; 35 × 2 = 70
$70 − $66 = $4
Hope this helped.
I got this same exact question in third grade and this was my answer.
Answer:
(1/117). decimal is 0.008547(6 decimal places)
Step-by-step explanation:
Ok here u go
