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A truck is carrying 150 pallets of steel ingots and 100 pallets of copper ingots, weighing a total of 10,000 pounds. What is the average (arithmetic mean) weight of a pallet of copper ingots?
(1) The average weight of a pallet of steel ingots is 20 pounds.
(2) The weight of a pallet of copper ingots varies from 50 to 100 pounds.
(1) The average weight of a pallet of steel ingots is 20 pounds.
(2) The weight of a pallet of copper ingots varies from 50 to 100 pounds.
03 Mar 2026, 22:25
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Statement 1:
We know total sum.
We know average weight of steel ingots--> We know total weight of steel ingots.
Thus,
We can find the total weight of copper ingots and divide to find avg weight of copper ingots.
SUFFICIENT.
Statement 2:
Just a range, we dont know any specific value for the average.
There is no Diophontine Equation trick here either that gives us only integer value. I can have any value within that range (multiple values may exist)
NOT SUFFICIENT
Option A
We know total sum.
We know average weight of steel ingots--> We know total weight of steel ingots.
Thus,
We can find the total weight of copper ingots and divide to find avg weight of copper ingots.
SUFFICIENT.
Statement 2:
Just a range, we dont know any specific value for the average.
There is no Diophontine Equation trick here either that gives us only integer value. I can have any value within that range (multiple values may exist)
NOT SUFFICIENT
Option A
ExpertsGlobal5
04 Mar 2026, 10:33
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ExpertsGlobal5
150 pallets of steel ingots and 100 pallets of copper ingots are present.
let the individual weights of steel ingots and copper ingots be a and b respectively.
150a + 100b = 10,000 pounds.
we need to find the average weight of Copper ingots?
Statement 1:
The average weight of a pallet of steel ingots is 20 pounds.
150*20 = total weight of Steel ingots = 3000.
100 copper ingots weigh = 10000-3000 = 7000
Average weight of Copper Ingots = 70.
Hence, Sufficient
Statement 2:
The weight of a pallet of copper ingots varies from 50 to 100 pounds.
The weight is between a range, so the value of copper ingots average will also move between boundaries.
Hence, Insufficient
Option A
