Ahmad earned Rs. 45,696/-in a year. What is the average monthly income?

A. 3,508
B. 2,888
C. 3,656
D. 3,808

45696 / 12 = 3,808

Rashid buys 3 books for Rs.16 each and four books for Rs. 23 each. What will be the average price of the books?

A. 24
B. 18
C. 20
D. 22

Total Books: 7

AVG formula = Sum of all books / Total Books

AVG of books = 16 + 16 + 16 + 23 + 23 + 23 + 23 / 7

= 140/7 = 20 ANS

A. -3
B. 3
C. 1/3
D. 1/7

A bookseller sold a book for Rs. 60/- to make a profit of 20%. In order to earn a profit of 10%, he should have sold it for:

A. 55
B. 50
C. 65.5
D. 70

Solution

Given Formula

SP = Sale price

CP = Cost price

SP = [(100 + Gain%) / 100] x CP

60 = [ ( 100+20 ) /100 ] x CP

⇒ CP = 50

To earn 10% profit, use

SP = [(100 + Gain%) / 100] x CP

SP = [ (100 +10 )/100] x 50

by solving this

SP = 55

Ahmad earned Rs. 45,696/-in a year. What is the average monthly income?

A. 3,508
B. 2,888
C. 3,656
D. 3,808

Solution

45696 / 12 = 3,808

A. 4,000
B. 4,400
C. 4,500
D. 3,500

25% of 30% of 45% is equal to _____.

A. 0.035
B. 0.0235
C. 0.0525
D. 0.03375

Solution

(25/100) * (30/100) * (45/100)
1/4 * 3/10 * 9/20
27/800 = 0.03375

What will be the cost of building a fence around a square plot with area equal to 289 sq ft, if the price per foot of building the fence is Rs. 58?

A. Rs. 3154
B. Rs. 3748
C. Rs. 3847
D. Rs. 3944

Solution

Let the side of the square plot be ‘a’ ft.
Given area of the plot (a x a) = 289 => a = 17
Length of the fence = Perimeter of the plot = 4a = 68 ft.
Cost of building the fence = 68 x 58 = Rs. 3944.

The average monthly salary of 24 employees in an organisation is Rs. 1500. If the manager’s salary is added, then the average salary increases by Rs. 400. What is the manager’s monthly salary?

A. Rs. 8840
B. Rs. 9450
C. Rs. 11,500
D. Rs. 12,800

Solution

Manager’s monthly salary

= Rs. (1900 x 25 – 1500 x 24) = Rs. 11,500

A. 4
B. 6
C. 7
D. 9