To calculate the true weight of the cookies by a scale having measures as,
- When there is nothing on a scale that reads 75 gm.
- When a package of cookies are weighed it reads 300 gm.
When there is nothing scale reading is 75 gm that means there is an error due to which the scale is weighing 75 gm more.
If the weight of an object = x gm
Its actual weight will be (x - 75) gm
And the expression to measure an object weighing 'x' grams will be (x - 75) gm.
So the true weight of the cooking weighing 300 gm will be,
Actual weight = (300 - 75)
= 225 gm
Therefore, the true weight of 300 gm cookies will be 225 gm.
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