Number of items sold by five persons A–E, Monday–Friday. Dashes are missing and to be calculated.
| Day | A | B | C | D | E |
|---|---|---|---|---|---|
| Monday | 840 | 880 | 480 | 560 | — |
| Tuesday | 720 | — | 1040 | 420 | 820 |
| Wednesday | 560 | 480 | 820 | — | 850 |
| Thursday | 1080 | 1020 | — | 1260 | 320 |
| Friday | — | 700 | — | 1020 | 800 |
If the items sold by C on Thursday equal the average of the items sold by C on Wednesday and Friday, then the total items sold by C over all five days is:
A3500
B3800 ✓ Correct
C3400
D3700
Correct answer: (B) 3800
Explanation
The total is 3800, so that is the answer.
C on Wednesday is 820 and on Friday is 700.
Their average is 760, so C on Thursday is 760.
C's five days are 480, 1040, 820, 760 and 700.
Their sum is 3800.
Hence 3800 is correct.
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