Carcass wrote:
Out of every 500 picture frames shipped, there are always exactly 20 damaged frames. Which of the following could be the number of damaged and undamaged frames, respectively, within a given shipment?
Indicate all such numbers.
A. 5 and 100
B. 5 and 120
C. 10 and 250
D. 20 and 480
E. 40 and 800
Kudos for the right answer and explanation
Out of every 500 picture frames shipped, there are always exactly 20 damaged frames.500 - 20 =
480So, there are
20 damaged frames for every
480 undamaged frames
In other words, the ratio
damaged frames/
undamaged frames =
20/
480 =
1/24 So any answer choice that yields the ratio
1/24 will be correct
A.
5/100 =
1/20 NO GOOD
B.
5/120 =
1/24 WORKSC.
10/250 =
1/25 NO GOOD
D.
20/480 =
1/24 WORKSE.
40/800 =
1/20 NO GOOD
Answer: B, D
Cheers,
Brent