**1. Answer : 4**

**Explanation :** Required Percentage =$\frac{100-50}{50}\times 100$= 100%

**2. Answer : 4**

**Explanation :** The average production of P = $\frac{60+90+50+100+80}{5}$= 76

The average production of Q =$\frac{50+70+70+80+100}{5}$ = 74

The average production of R = $\frac{70+80+90+70+70}{5}$ = 76

Maximum average production = P and R both

**3. Answer : 2**

**Explanation :** The percentage rise in 2010 =$\frac{70-50}{50}\times 100$ = 40%

The percentage rise in 2011 = $\frac{70-70}{70}\times 100$= 0%

The percentage rise in 2012 = $\frac{80-70}{70}\times 100$= 14.28%

The percentage rise in 2013 =$\frac{100-80}{80}\times 100$ =25%

**4. Answer : 2**

**Explanation :** The percentage of production of Company R to production of Company Q

in 2009 =$\frac{70}{50}\times 100$ = 140

in 2010 =$\frac{80}{70}\times 100$ = 114.28

in 2011 =$\frac{90}{70}\times 100$ = 128.57

in 2012 = $\frac{70}{80}\times 100$= 87.5

in 2013 = $\frac{70}{100}\times 100$= 70

**5. Answer : 1**

**Explanation :** Average production of company P during the years 2011 to 2013 =$\frac{50+100+80}{3}$ = $\frac{230}{3}$

Average production of company Q during the years 2011 to 2013 =$\frac{70+80+100}{3}$ = $\frac{250}{3}$

Required ratio = 23 : 25