Table - Sales of 3 Items over 3 Months

Item	Jan	Feb	Mar
X	150	180	170
Y	120	110	130
Z	200	210	190

Which item had the highest average sales?

Correct Answer: Option Z

To determine which item had the highest average sales over the three months (January, February, and March), we calculate the average sales for each item using the data provided in the table:

1. Sales Data Breakdown:

• Item X: Jan = 150, Feb = 180, Mar = 170

• Item Y: Jan = 120, Feb = 110, Mar = 130

• Item Z: Jan = 200, Feb = 210, Mar = 190

2. Calculate Average Sales for Each Item:

The formula for calculating the average is:

$\text{Average}=\frac{\text{Total Sales}}{\text{Number of Months}}$

• Item X Average Sales:

$\text{Average}=\frac{150+180+170}{3}=\frac{500}{3}\approx 166.67$

• Item Y Average Sales:

$\text{Average}=\frac{120+110+130}{3}=\frac{360}{3}=120$

• Item Z Average Sales:

$\text{Average}=\frac{200+210+190}{3}=\frac{600}{3}=200$

3. Conclusion:

Comparing the average sales calculated:

• Item X: 166.67

• Item Y: 120

• Item Z: 200

Item Z has the highest average sales of 200.