**Express 1.09 in term of Percentage.**

A. 1.09%

B. 10.9%**C. 109%**

D. None of these

A. 1.09%

B. 10.9%**C. 109%**

D. None of these

A. 1

B. 2**C. 3**

D. 4

A. 36

B. 40**C. 46**

D. 52

A. 19

B. 20**C. 21**

D. 22

let her age be x

after 1 year her age will be x+1=2(x-10)

x+1=2x-20

1+20=2x-x

x=21 years

A. 53.33**B. 54.68**

C. 55

D. None of these

Required average = (55 x 50 + 60 x 55 + 45 x 60) / (55 + 60 + 45)

= (2750 + 3300 + 2700) /160

= **54.68 is correct Answer**

A. 17 kg

B. 20 kg

C. 26 kg**D. 31 kg**

Let A, B, C represent their respective weights. Then, we have: A + B + C = (45 x 3) = 135 …. (i) A + B = (40 x 2) = 80 …. (ii) B + C = (43 x 2) = 86 ….(iii) Adding (ii) and (iii), we get: A + 2B + C = 166 …. (iv) Subtracting (i) from (iv), we get : B = 31. B’s weight = **31 kg**

A. 123

B. 137

C. 121**D. 122**

Sum of 18 observations = 18×124 =2232

Correct sum of 18 observations = 2232-46-82+64+28

= 2196

Therefore, Correct average =2196/18 = **122**

A. 36km/h

B. 45km/h**C. 48km/h**

D. 50km/h

Explanation:

Speed of person from x to y =40 km/h

Speed of person from y to x =(40×150)/100 = 60km/h

Since the distance travelled is same

Therefore, Average Speed = (2x40x60)/40+60 = **48km/h**

A. 57.4

B. 57.5

C. 58.9**D. 59.1**

Correct mean = 30x 58.5 -57 +75/30

= 1755+18/30 = 1773/30 = **59.1**

A. 16

B. 12

C. 8**D. 6**

Let the number of women workers be x

According to the question 22*x+16*8 = 15(16+x)

=> 22x+128 =240 +15x

=> 22x-15x = 240 -128

=> 7x=112

Therefore, x=112/7 =16

Therefore, Unmarried women workers =(16-10) = **6**