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Andy weighs a loaded truck on a platform scale marked in increments of 1000 pounds.?
Question : Andy weighs a loaded truck on a platform scale marked in increments of 1000 pounds.?
What is the possible error of measurement?
A) 1000 lb.
B) 500 lb.
C) 250 lb.
D) 100 lb.
please help me >.< im so confused
platform scales
Best answer:
Answer by murphy
A
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#2 written by sailingsoul 1 year ago
Assuming there is only one correct answer, this is tricky so lets try to use logic as with the second answer. It is possible if the weight is 900 or 1100, the reading expected would be 1000, making the error 100 lb.
The same could be said for a weight of 750 or 1250 the reading expected would read 1000 , making the error 250.
The logic given for the answer to be (B) seems most correct based on the “only one correct answer” rule.
Sometimes with multiple choice it not uncommon to have two wrong answers that appear similar and could be a toss up if you have no clue and is guessing, as with D= 100 or A=1000 , making them decoys for the clueless.
That leaves B=500, my answer but I’d argue it is possible that under the right circumstances C + D could prove to be true but argue that with the examiner after the test and pick B. good luck.SS - Comment Feed for this Post
The scale can only give out an answer of 0, 1000, 2000, 3000, 4000, etc.and the biggest error will be 500 pounds because this 500 pound answer assumes that it changes from 1000 pounds readout to 2000 pounds as the object ‘s weight were increased on the scale at 1500 pounds. if an object weighed 1499 pounds was placed on the scale, the scale would read 1000 to give an error of 499 pounds. If the object weighed 1500 pounds the scale would readout either 1000 or 2000 pounds, giving an error of 500 pounds, the largest the error can be. if an object weighed 501 pounds were on the scale it our read 2000 pounds giving an error of 499 pounds. any other object between 1000 and 2000 pounds besides these three examples will have a smaller error. The same arguement applies to all other changes at the mid-point between the readings.
if the scale would change from 1000 to 2000 as the object ‘s weight was increased at anything less than 2000 reading 1000 and only flipping to readout at 2000 when the object that was on the scale was equal to or greater than 2000 pounds then the weight error would be 1000 pounds.
since you did not specify the point at which the scale changes form 1000 to 2000 (or any other numbers the scale can give out) we really can’t determine the maximum error based on the data you gave. A reasonable assumption is the scale changes at the mid-point between the readout numbers, and this means that the maximum error to be 500 pounds.