Answer:
The price of one kg of cookies is $1.8.
Step-by-step explanation:
Given : The price of 600 grams of candy and 1.5 kg of cookies was 4 dollars and 62 cents.
To find : What is the price of one kg of cookies if it is 1 dollar and 40 cents cheaper than 1 kg of candy?
Solution :
Let x be the price of the kilogram of candy and
y be the price of kilogram of cookies.
The price of 600 grams of candy and 1.5 kg of cookies was 4 dollars and 62 cents.
600 grams = 0.6 kg
4 dollars and 62 cents = 4.62 dollars
The equation form is
.....(1)
The price of one kg of cookies if it is 1 dollar and 40 cents cheaper than 1 kg of candy
So, ......(2)
Solving equation (1) and (2),
Substitute y from (2) into (1)
Substitute in (2),
Therefore, The price of one kg of candy is $3.2 and the price of one kg of cookies is $1.8.