AP Police SI Mains 2019 Arithmetic and Reasoning

Total number of students in 2014,2016&2017 put together is

$$=200+250+450=900.$$

C is correct choice.

In the year 2016 & 2017 ,number of students was 250&450 respectively.

So, percentage increased

$$=(450-250)/250=80 percent.$$

A is correct choice.

In the year 2015 , number of students was 400.

In the year 2014 & 2016 , number of students was 200&250 respectively.

So, required ratio is$$=400:(200+250)$$.

$$=400:450=8:9.$$

B is correct choice.

In the year 2014 number of students was 200 & In the year 2017 number of students was 450.

So, percentage increase is 

$$=((450-200)/200)×100=125 percent$$

So, D is correct choice.

In the year 2014,2015,2016 & 2017 number of students was 200,400,250 & 450 respectively.

So, average number of students was 

$$=(200+400+250+450)/4=325.$$

So,D is correct choice.

Required percentage$$=(138/785)×100$$

$$=17.57 percent$$.

D is correct choice.

D has the highest growth percent during the period which is $$=(164-44)/44=2.72$$.

C is correct choice.

In the year 2016 the company sale was 207 which was 102 in 2015 for D.

So in the year it attains over 100 percent growth in the year 2016.

So, option C is correct choice.

In the year 2014 company occurs a loss in total sales.

In the year 2015 company gained

$$=(775-734)/734=5.58 percent.$$

In the year 2016 company gained 

$$(785-775)/775=1.29 percent.$$

In the year 2017 company gained 

$$=(1005-785)/785=28.02 percent.$$

So, in 2017 company gained highest percentage.

So, A is correct choice.

In the year 2013 total sales of A and D was $$=88+44=132.$$

In the year 2016 total sales of A and D was $$=207+175=382.$$

percentage change during the period was$$=(382-132)/132=1.89 $$ or 189 percent.

So, C is correct choice.