Question
The age of Manish is half of that of his mother. His
mother is 9 years younger to his father, and Manish is 7 years older than his sister. The age of his father is three times that of his sister, what is the age of Manish?Solution
Let Age of Manish's Mother = X Age of Manish = X/2 Age of Manish's father = X + 9 Age of Manish's Sister = (X/2) – 7 The age of his father is three times that of his sister ⇒ X + 9 = 3 {(X/2) – 7) ⇒ X + 9 = 3X/2 – 21 ⇒ X + 9 = 1.5X – 21 ⇒ 9 + 21 = 1.5X – X ⇒ 0.5X = 30 ⇒ X = 60. Age of Manish = X/2 = 60/2 = 30 Years.
The average daily income of a daily wage worker, in the month of November is Rs. 200. If his average income on 1st 13 days of the month is Rs. 60 and on...
A and B started a business investing Rs. 1500 for ‘x’ months and Rs. 1800 for 10 months, respectively. Out of total profit of Rs. 5000, profit shar...
A bowler gives 15 runs per wicket. He gives 30 runs and takes 5 wickets in a last match after which his average becomes 13.5 runs per wicket. How many w...
A student scored marks with a certain average in the first 12 tests. In the next 6 tests, he scored with an average of 78 marks, due to which his overal...
The average of 12 numbers is 120. The average of the first 7 numbers is 75 and the average of the last 4 numbers is 53. What is the 8th number?
The average salary of 28 employees is recorded as ₹ 16,584. If the salary of an employee with value ₹14,526 was entered Wrongly as ₹ 41,238, then ...
A hollow spherical metallic ball has an external diameter 8cm and is 1/2cm thick. The volume of the ball (in cm cube) is.
The average of five even numbers is 38. If we replace two of these even numbers, 88 and 92, with a single even number X, the new average decreases by 4....
A businessman earned an average profit of x rupees in the first 24 days. In the next 6 days, he earned an average profit of 96 rupees per day, increasin...
Each question contains a statement followed by Quantity I and II. Read the information clearly and answer your questions accordingly.
Quanti...
Relevant for Exams:
