Answer :
Final answer:
A supermarket sells tuna in 90 g and 200 g tins. In one day, 112 tins of tuna sold, with a total mass of 18 kg. 40 tins of 90 g and 72 tins of 200 g were sold.
Explanation:
Let's start by assigning variables to the number of 90 g tins and 200 g tins sold. Let's call the number of 90 g tins 'x' and the number of 200 g tins 'y'.
We know that the total mass of the tins sold is 18 kg or 18,000 g. From the information given, we can form the equation: 90x + 200y = 18,000.
We also know that 112 tins were sold in total, so we have the equation: x + y = 112.
Solving these two equations simultaneously, we can find the values of x and y.
Let's multiply the second equation by 90:
90x + 90y = 10,080
Subtracting this equation from the first equation, we get:
110y = 7,920
Dividing both sides by 110, we find that y = 72.
Substituting this value back into the second equation, we find that x = 40.
Therefore, 40 tins of 90 g and 72 tins of 200 g were sold.
Learn more about the topic of tins of tuna sold here: brainly.com/question/32629357
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