SOLUTION: Lily went shopping with Alan. Lily spent $11.20 for 3.60 kg flour and 1 kg sugar. Alan spent $20 for 5 kg flour and 2.50 kg sugar. What is the price of a kilogram of flour and a ki

Question 1105106: Lily went shopping with Alan. Lily spent $11.20 for 3.60 kg flour and 1 kg sugar. Alan spent $20 for 5 kg flour and 2.50 kg sugar. What is the price of a kilogram of flour and a kilogram of sugar respectively

Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = price in dollars/kg for flour
Let = price in dollars/kg for sugar
------------------------------
(1)
(2)
---------------------------
(1)
and
(2)
--------------------------
(1)
(2)
Multiply both sides of (2) by and
subtract (2) from (1)
(1)
(2)
-------------------------

and
(2)
(2)
(2)
--------------------
flour is $2/kg
sugar is $4/kg
--------------------
check:
(1)
(1)
(1)
(1)
You can check (2)

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