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 average number of items sold by D on Monday and Tuesday is 490, then the items sold by E on Friday are ______ % more than the items sold by D on Monday.
A39.76
B42.86 ✓ Correct
C48.23
D45
Correct answer: (B) 42.86
Explanation
It is about 42.86 percent more, so that is the answer.
D on Tuesday is 420, and the average of Monday and Tuesday is 490.
So D on Monday is 560.
E on Friday is 800.
The excess is 800 minus 560, which is 240.
240 over 560 is about 42.86 percent.
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