Let the number of people who read ‘The Hindu and TOI (Only)’ be x Let the number of people who read ‘The Hindu and Economic Times (Only)’ be y. Let the number of people who read ‘TOI and Economics Times (Only)’ be z. Given that: 40 + 20 +x +y = 100 =>x+y = 40 ---- (i) 70 + 20 +x+z = 150 =>x+z = 60 ----(ii) 100 + 20 +y+z = 200 =>y+z = 80 -----(iii) Adding eq. (i), (ii) and (iii), we get 2 (x+y+z) = 180 x+y+x = 90 ----(iv) Now, subtracting (iv) by (i), we get z= 50 Now, subtracting (iv) by (ii), we get y= 30 Now, by subtracting (iv) by (iii), we get X=10 Total number of residents in the building = 40 + 70 + 100 + 10 + 50 + 30 + 20 = 320.
How many Employees are labours?
Identify the diagram that best represents the relationship among the classes given below: Bus, Driver and Road.
Which of the following diagrams indicates the best relation between the fact that Solid common salt is hygroscopic, crystalline and non –electrolytic ...
निम्नलिखित जानकारी को पढ़िए और नीचे दिए गए प्रश्नों के उत...
Study the given diagram carefully and answer the question. The numbers in different sections indicate the number of students who have scored more than 7...
Which of the following figures correctly represents the relationship among the three sets for:
Modem, Mobile, Headphones
How many female executives are there in the organization?