Study the line chart and table given below and answer the following questions

Line chart shows the number of chairs manufactured by 4 different chair manufacturers (A, B, C & D) in 2016 & 2017 and table shows the number of chairs sold by these manufacturers in 2016 & 2017.

Manufacturer	Chairs sold
	2016	2017
A	840	1440
B	900	1080
C	570	900
D	810	720

If chairs manufactured by A in 2018 are 50% more than chairs sold by B in 2016 and ratio of sold to unsold chairs of A in 2018 is 2 : 1, then find average of chairs sold by A in 2016, 2017 & 2018.

The correct option is 1060.

Let's break down the problem step-by-step using the data provided in the table and line chart.

Step 1: Understand the given data

From the table of chairs sold:

- Chairs sold by A in 2016 = 840
- Chairs sold by A in 2017 = 1440
- Chairs sold by B in 2016 = 900

Step 2: Find the number of chairs manufactured by A in 2018

It is given that the chairs manufactured by A in 2018 are 50% more than the chairs sold by B in 2016.

$\text{Chairs manufactured by A in 2018}=900+(50\%\text{of}900)$

$\text{Chairs manufactured by A in 2018}=900+450=1350$

Step 3: Find the number of chairs sold by A in 2018

The ratio of sold to unsold chairs of A in 2018 is given as 2 : 1.

Total manufactured chairs = Sold chairs + Unsold chairs = 2 parts + 1 part = 3 parts.

$\text{Chairs sold by A in 2018}=\frac{2}{3}\times 1350=900$

Step 4: Calculate the average of chairs sold by A in 2016, 2017, and 2018

$\text{Total chairs sold by A in (2016 + 2017 + 2018)}=840+1440+900=3180$

$\text{Average}=\frac{3180}{3}=1060$

Thus, the average number of chairs sold by A in 2016, 2017, and 2018 is 1060.