## The difference of 1 integer 3/16 and its reciprocal is?

A) 1 1/8

B) 1 1/3

C) 15/16

D) None of these

Required difference = 19/1616/19

by solving we get:

=105/304

A) 10

B) 95

C) 100

D) None of these

A) 0.2

B) 0.02

C) 0.632

D) None of these

A) 46.95

B) 43.75

C) 50

D) None of these

A) 4

B) 6

C) 5

D) None of these

A) 108

B) 172

C) 5

D) 178

A) 1

B) 3

C) 5

D) None of these

A) 8

B) 8.5

C) 10

D) None of these

## The average of 6 numbers is 30. If the Average of first four is 25 and that of last three 35. What is the fourth number?

A) 25

B) 30

C) 35

D) None of these

six numbers are:  a,b,c,d,e,f
Then
a+b+c+d = 25×4 = 100
d+e+f = 35×3 = 105
a+b+c+d+e+f = 30×6 = 180
then the fourth number is:
d=100+105-180=25

## The average age of 3 friends is 23. Even if the age of the 4th is added the average remains 23. what is the age of 4th friend?

A) 21 yrs

B) 23 yrs

C) 32 yrs

D) None of these

Sum of the ages of 3 friends
Sum of the ages of 4 friends
Age of 4th friend = 92 years – 69 years = 23 years