Question

In a locality, the number of houses built in different years is depicted in the following graph:
In which year the rate of increase of number of house built per year is maximum?

• A. Between 2014 - 2015
• B. Between 2015 - 2016
• C. Between 2016 - 2017
• D. Between 2017 - 2018

Answer 1

The correct option is C Between 2016 - 2017

Let's tabulate the given data.
Year Number of Houses built

2014	6
2015	7
2016	7
2017	10
2018	12

The increase in number of house built per is year is tabulated as follows:
Year Interval Increase of Number of Houses built per Year Interval

2014 - 2015	7 - 6 = 1
2015 - 2016	7 - 7 = 0
2016 - 2017	10 - 7 = 3
2017 - 2018	12 - 10 = 2

Hence, between the years 2016 and 2017, the number of houses built increased the most.

$\therefore$ The required answer is option (c).