Answer :
A total of approximately 8 cans would be needed to be purchased for making the spaghetti sauce as per the calculations.
The computation for the number of cans required to be purchased for making the spaghetti sauce can be done using the provided information, and the use of values into generalized formula. The calculation steps for the same are as shown below,
Yield of Spaghetti = Weight per can x Yield Percentage
Yield of Spaghetti = 28 x 66%
Yield of Spaghetti = 18.48
Now, the number of cans required will be,
Required Cans = Required Tomatoes / Yield of Spaghetti
Required Cans = 140 / 18.48
Required Cans = 7.575
Therefore, the cans required will be approximately 8 cans.
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