Answer:
One pack of biscuits cost $x and one cup of ice cream costs $y.
The cost of both the items are x = 2 and y = 3
Solution:
By solving determine the cost of both items
Step 1:
Say Biscuits=x and ice cream=y
Therefore: 1 pack biscuit and 2 cups ice cream = x+2y=8
3 pack biscuit and 1 cup ice cream = 3x+y=9
Step 2:
x+2y=8 ---- (i)
3x+y=9 ----- (ii)
Step 3:
To solve:
From equation i, x=8-2y
Substituting into (ii),
3(8-2y)+y=9
24-6y+y=9
24-5y=9
-5y=-15
y=3
Step 4:
To find x:
Place y=3 into (i)
x+2y=8
x+2(3) =8
Step 5:
x+6=8
x=8-6
x=2
Hence the cost of both the items biscuit and icecream is 2 and 3
