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23 Feb 2026, 20:00
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E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
65%
(hard)
Question Stats:
57% (02:18) correct
43%
(02:14)
wrong
based on 237
sessions
History
Date
Time
Result
Not Attempted Yet
All of the electronic waste that the city of Springfield collected last year was dissolved to recover the rare metals used in the manufacture of electronics. The dissolution process produced a large amount of liquid waste, and to reduce the amount of liquid waste that will be generated this year to 70% of last year’s, the city has overhauled its electronic waste disposal policies. This year, Springfield will separate all electronic waste that can be reused, repaired, or recycled, reducing the total volume of waste to be dissolved to 70% of last year's volume.
The city’s overhauled policies assume that
A) this year, no piece of electronic waste that could be reused, repaired, or recycled will be dissolved.
B) it will cost Springfield less than 70% what it cost last year to dispose of the liquid waste to separate reusable, repairable, or recyclable electronic waste from electronic waste to be dissolved.
C) electronic waste collected by the city will contain a larger proportion of reusable, repairable, or recyclable pieces of waste this year than it did last year.
D) this year, Springfield will not collect a larger quantity of electronic waste than it did last year.
E) the electronic waste dissolved this year will not produce more liquid waste per unit volume dissolved than the electronic waste dissolved last year did.
The city’s overhauled policies assume that
A) this year, no piece of electronic waste that could be reused, repaired, or recycled will be dissolved.
B) it will cost Springfield less than 70% what it cost last year to dispose of the liquid waste to separate reusable, repairable, or recyclable electronic waste from electronic waste to be dissolved.
C) electronic waste collected by the city will contain a larger proportion of reusable, repairable, or recyclable pieces of waste this year than it did last year.
D) this year, Springfield will not collect a larger quantity of electronic waste than it did last year.
E) the electronic waste dissolved this year will not produce more liquid waste per unit volume dissolved than the electronic waste dissolved last year did.
24 Feb 2026, 05:30
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Paragraph analysis:
Last year- > All electronic waste was dissolved -> produced liquid waste.
--Dissolution creates liquid waste.
Goal-> Reduce liquid waste this year to 70% of last year.
Plan->Separate reusable / repairable / recyclable waste.
Therefore, only 70% of last year’s waste volume will be dissolved.
Its is assumed that if we dissolve 70% of last year's volume, then liquid waste will also become 70%. This works only if liquid waste produced per unit stays the same.
So if each unit dissolved produces more liquid waste, the plan fails.
So Liquid waste produced per unit dissolved must NOT increase.
Even dissolving less waste could still produce equal or more liquid waste.
A) Says none reusable waste will be dissolved.
Not required. Even if some reusable items are accidentally dissolved, total volume could still be 70%.
B) Talks about cost, not liquid waste volume.
Irrelevant.
C) Proportion of reusable waste increasing is unnecessary.
They already plan separation regardless of proportion.
D) Even if more total waste is collected, they could still dissolve only 70% of last year's volume.
Not required.
E) Correct Answer
the electronic waste dissolved this year will not produce more liquid waste per unit volume dissolved than last year
Because:
Plan assumes
less dissolved volume → less liquid waste
That relationship holds only if waste generation rate per unit doesn’t increase.
Last year- > All electronic waste was dissolved -> produced liquid waste.
--Dissolution creates liquid waste.
Goal-> Reduce liquid waste this year to 70% of last year.
Plan->Separate reusable / repairable / recyclable waste.
Therefore, only 70% of last year’s waste volume will be dissolved.
Its is assumed that if we dissolve 70% of last year's volume, then liquid waste will also become 70%. This works only if liquid waste produced per unit stays the same.
So if each unit dissolved produces more liquid waste, the plan fails.
So Liquid waste produced per unit dissolved must NOT increase.
Even dissolving less waste could still produce equal or more liquid waste.
A) Says none reusable waste will be dissolved.
Not required. Even if some reusable items are accidentally dissolved, total volume could still be 70%.
B) Talks about cost, not liquid waste volume.
Irrelevant.
C) Proportion of reusable waste increasing is unnecessary.
They already plan separation regardless of proportion.
D) Even if more total waste is collected, they could still dissolve only 70% of last year's volume.
Not required.
E) Correct Answer
the electronic waste dissolved this year will not produce more liquid waste per unit volume dissolved than last year
Because:
Plan assumes
less dissolved volume → less liquid waste
That relationship holds only if waste generation rate per unit doesn’t increase.
24 Feb 2026, 06:26
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electronic waste was dissolved to recover the rare materials.
this dissolution process produced large amount of liquid waste.
to reduce the liquid waste, they changed their waste disposal policies.
they will separate all electronic waste that can be reused, repaired or recylced.
conclusion- this will reduce total volume of waste to be dissolved to 70% of last years volume.
A this is not what they are assuming for their plan. if there is no piece then it doesnt make sense to follow this policies and achieve the result.
B cost has no implication here. out of scope.
C even if it does, they are going to separate them in category so not everything will be dissolved and hence they still can get the resuts.
D but they still can filter things out and tjaat will reduce the waste to be dissolved
E if dissolved waste produced more liquid waste per unit volume then even by having reduction in amount to be dissolved wont matter much. because it might be the same liquid waste as last year. so they must be assuming this one.
this dissolution process produced large amount of liquid waste.
to reduce the liquid waste, they changed their waste disposal policies.
they will separate all electronic waste that can be reused, repaired or recylced.
conclusion- this will reduce total volume of waste to be dissolved to 70% of last years volume.
A this is not what they are assuming for their plan. if there is no piece then it doesnt make sense to follow this policies and achieve the result.
B cost has no implication here. out of scope.
C even if it does, they are going to separate them in category so not everything will be dissolved and hence they still can get the resuts.
D but they still can filter things out and tjaat will reduce the waste to be dissolved
E if dissolved waste produced more liquid waste per unit volume then even by having reduction in amount to be dissolved wont matter much. because it might be the same liquid waste as last year. so they must be assuming this one.
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