Directions : Read the data carefully and answer the following questions.
The line graph shows the total number of items X and Y sold from Monday to Friday, and the table shows the ratio of the number of item X to item Y sold.
The ratio of item X to item Y sold
Monday
9: 7
Tuesday
12: 13
Wednesday
11: 9
Thursday
5: 6
Friday
3: 7
If the number of items X, Y, and Z sold on Wednesday is 25% more than the number of items X and Y sold on Monday, and the number of item Z sold on Friday is 167 more than that on Wednesday, then find the number of item Z sold on Friday.
1.487
2.457
3.467
4.477
5.447
Correct Answer : 3
Solution :
Common Solution:
Item X sold on Monday = 800 * 9/16 = 450
Item Y sold on Monday = 800 - 450 = 350
Items X and Y
Item X
Item Y
Monday
800
450
350
Tuesday
625
300
325
Wednesday
700
385
315
Thursday
550
250
300
Friday
750
225
525
Items X, Y, and Z sold on Wednesday = 800 * 125/100 = 1000
Item Z sold on Wednesday = 1000 - 700 = 300
Hence, item Z sold on Friday = 300 + 167 = 467
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