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Directions For Questions
Study the following information carefully and answer the questions given below.
The given bar graph shows the number of manufactured laptops in five different companies.
The given line graph shows the percentage of the laptops are defective in five different companies.
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The number of defective Samsung laptops is what percent of the number of non defective Lenovo laptops?
Defective laptops in Samsung = 30/100 * 14000 = 4200
Non defective laptops in Lenovo = 75/100 * 12000 = 9000
Required percentage = 4200/9000 * 100 = 46.67%
In company Sony, the cost price of a laptop is Rs.40000 and 80% of the non defective laptops are sold. Find the total revenue gets by Sony?
Non defective laptops = 90/100 * 18000 = 16200
Sold non defective laptops = 16200 * 80/100 = 12960
Revenue collection = 12960 * 40000 = Rs.518400000
What is the ratio of the number of non defective laptops of company Dell to the number of defective laptops of company Apple?
Non defective laptops of Dell = 80/100 * 16000 = 12800
Defective laptops of Apple = 5/100 * 20000 = 1000
Required ratio = 12800: 1000
= 64: 5
What is the average number of defective laptops of all the companies together?
Defective laptops of Dell = 20/100 * 16000 = 3200
Defective laptops of Sony = 10/100 * 18000 = 1800
Defective laptops of Samsung = 30/100 * 14000 = 4200
Defective laptops of Lenovo = 25/100 * 12000 = 3000
Average = (3200 + 1800 + 4200 + 1000 + 3000)/5 = 2640
The number of laptops manufactured in Lenovo is what percent of the number of laptops manufactured in Sony?
Required percentage = 12000/18000 * 100 = 66.67%
Average weight of the boys in the class is 45 kg and average weight of the girls in the class is 25 kg. If the average weight of the class is 30 kg, then find the ratio of the number of boys to girls in the class?
Average ages of Arun and Anu is 30 years. If the double of the sum of their age is six times Anu’s age, then what is the present age of Arun?
Arun + Anu = 30 * 2 = 60
2 * 60 = 6 * Anu
Anu = 20 years
Arun = 60 – 20 = 40 years
If the area of a rectangle is 432 cm2 and the length of the rectangle is 6 cm more than the breadth of the rectangle. If the radius of the circle is 4 cm less than the breadth of the rectangle, then what is the difference between the perimeter of the rectangle and circumference of the circle?
Area of the rectangle = 432
Length of the rectangle = x
Breadth of the rectangle = x – 6
x * (x – 6) = 432
x2 – 6x – 432 = 0
x2 – 24x + 18x – 432 = 0
x(x – 24) + 18(x – 24) = 0
x = 24, -18 (negative value is neglect)
Breadth of the rectangle = 24 – 6 = 18 cm
Perimeter of the rectangle = 2 * (18 + 24) = 84 cm
Radius of the circle = 18 – 4 = 14 cm
Circumference of the circle = 2 * 22/7 * 14 = 88 cm
Required difference = 88 – 84 = 4 cm
A alone complete the work in 24 days and A and B together can complete the work in 16 days. If A started the work and after 8 days left, then B alone complete the remaining work, how many days B complete the remaining work?
LCM of 24 and 16 = 48
Total work = 48 units
A’s per day work = 2 units
(A + B)’s per day work = 3 units
B’s per day work = 1 unit
A’s 8 days work = 16 units
Remaining work = 48 – 16 = 32
Required no. of days = 32/1 = 32 days
(Or)
A = 1/24
A + B = 1/16
B = 1/16 – 1/24 = 1/48
A works for 8 days complete 8/24 of the work.
Remaining work = 2/3
B alone complete 2/3 of the work = 48 * 2/3 = 32 days
If the number of male employees in A is 40% more than the number of female employees from A and the number of female employees in B is 40% less than the number of male employees in B. If the total number of employees in A is 50% more than the total number of employees in B, then what is the ratio of the number of male to female employees from A and B together?
Number of employees in B = x
Number of employees in A = x * 150/100 = 3x/2
Number of male to female employees in A = 140: 100 = 7: 5
Number of male to female employees in B = 100: 60 = 5: 3
Required ratio = ((7/12 * 3x/2) + 5/8 * x): ((3x/2 * 5/12) + (x * 3/8))
= 12x/8: 8x/8
= 3: 2
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