Showing Mcqs of math -- (543)

 The average monthly salary of a staff of 9 persons is Rs. 2450. One member of the staff whose monthly salary is Rs. 2650 transferred. Find the average salary of the remaining 8 persons of the staff.

RS .2445

RS .2425

RS .2675

RS.3025

The average income of A for 15 days is Rs. 70. The average for first five days is Rs. 60 and that for the last nine days is Rs. 80 The income for the sixth day is

RS.80

RS.65

RS.50

RS.30

The average of 50 numbers is 38. If two numbers 45 and 55 are discarded, the average of the remaining set of numbers is

38.5

37.5

37.0

36.5

The average of two numbers is 62. If 2 is added to the smaller number, the ratio between the numbers becomes 1: 2. The smaller number is

40

66

49

69

If 4x + 13 = 7 - 2x what is the value of x?

-10/3

-3

-1

1

If (x + 3)/2  +  3x = 5(x - 3) + (x + 23)/5 what is the value of x?

3

5

7

9

Which of the following is a solution of the equation overline 2x + 5 = 3 

5

6

8

the equation has no solution

If the sum of two numbers is 13 and the difference of the numb is 23, what is the product of the numbers?

-90

-23

0

18

If 4 ^ a = 8 ^ b what is the ratio of a to b?

1/2

2/3

3/2

2/1

If 4 ^ a = 5 ^ b what is the ratio of a to b?

0.8

0.86

1.08

1.16