Question

Observe the table given below:

If the mean of the packets packed per day is 60, the number of food packets packed on Thursday is .

• A. 62
• B. 58
• C. 51
• D. 55

Answer 1

The correct option is B 58

Given:
Mean of the packets = 60

Average (mean) = (Total food packets packed in five days)/5
<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> ⇒ Average = (M + T + W + Th + F)/5
<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> ⇒ (67 + 55 + 71 + ? + 49)/5 = 60
<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> ⇒ Average = 242 + ? = 60 × 5
<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> ⇒ 300 - 242 = 58

Hence, the number of food packets packed on Thursday is 58.