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Sum of ages of A, B and C = 28 × 3 = 84 years Sum of ages of B, A and D = 26 × 3 = 78 years So, C – D = 84 – 78 = 6 years Let the age of C and D be 5x and 3x years, respectively. 5x – 3x = 6 2x = 6 x = 3 So, age of D = 3x = 9 years.
Present ages of ‘A’, ‘B’ and ‘C’ are in the ratio 4:7:12, respectively. If present average age of ‘A’ and ‘C’ is 32 years, then find...
Which of the following statement/s about the Central Bureau of Investigation is /are incorrect?
1. It enjoys the status of an autonomous offic...
Which of the following measures of dispersion is based on the variance of a dataset?
A mixture (milk + water) contains milk and water in the ratio 7:3, respectively. If 19 litres of mixture is taken out, then quantity of milk left in the...
The principle that requires a business to disclose all material information in the financial statements is called:
Which of the following statements is/are correct?
(1) Eighth Schedule deals with languages recognized by the Constitution.
(2) At present,...
Bio-remediation is a technology which is being extensively utilized in controlling
Which one of the following statements best describes the role of B cells and T cells in the human body?
The average marks of the students of a class in a particular exam is 80. If 5 students whose average marks in that exam is 40 are excluded, the average ...
In the year 1919, what was the reason for Mahatma Gandhi to warn the Viceroy that a countrywide Satyagraha would be launched?
