**(4)In which of the years was the percentage increase in production of company A was minimum from the previous year?**

We shall see how we solve this using the below trick.

## Steps to find percentage increase in production of company A

Step 1:Look at the graph and compare the lengths of the bars of company A for different years.

Step 2:Find out the year where the length of graph is less than its previous year.

We observe the following

(a) Production of company A from 2007 to 2010 shows an increasing trend and from 2010 to 2012 shows a decreasing trend.

(b)We shall consider only 2007 to 2010 ignoring others and start comparing the current year with its previous year

Comparing 2008 and 2007

Number of parts in 2008=3

Number of parts in 2007=1

Increase=2

Comparing 2009 and 2008

Number of parts in 2009=7

Number of parts in 2008=3

Increase=4

Comparing 2010 and 2009

Number of parts in 2010=8

Number of parts in 2009=7

Increase=1

**Ans Percentage Increase in production of company A is minimum in the year 2010 where it has increased by only 1 part compared to the year 2009.**