The following table shows the number of shoes sold by five different salesmen (A to E) on seven different days (Monday to Sunday) in a given week. Based on the data in the table, answer the questions that follow.
| Salesman | Monday | Tuesday | Wednesday | Thursday | Friday | Saturday | Sunday |
|---|---|---|---|---|---|---|---|
| A | 90 | 80 | 56 | 96 | 40 | 40 | 48 |
| B | 184 | 180 | 24 | 54 | 32 | 52 | 196 |
| C | 72 | 160 | 26 | 60 | 76 | 94 | 124 |
| D | 92 | 120 | 128 | 24 | 104 | 152 | 68 |
| E | 36 | 96 | 138 | 116 | 160 | 30 | 20 |
The number of shoes sold by salesman B on Thursday, by E on Saturday and by D on Tuesday, gives the average number of shoes as:
A68 ✓ Correct
B104
C96
D88
Correct answer: (A) 68
Explanation
Pick the three figures the question asks for: B on Thursday is 54, E on Saturday is 30 and D on Tuesday is 120. Add them to get 204, then divide by 3 because there are three numbers. 204 divided by 3 is 68, so the average is 68.
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