Question
Sum of ages of 45 employees is 1080 years. The average
age of 15 of them is 20 years and average age of another 20 of them is 18 years. Find the average age of the remaining employees.Solution
Given, sum of age of 45 employees = 1080 years
Sum of age of 15 employees = 15 × 20 = 300 years
Sum of age of another 20 employees = 20 × 18 = 360 years
Remaining number of employees = 45 – 15 – 20 = 10
Average age of remaining 10 employees = {(1080 – 300 – 360)/10} = (420/10) = 42 years
- Which component stores the essential instructions required to start a computer?
A trader cheats by using a weighing scale that shows 1 kg while actually giving only 900 grams. He also marks up the goods by 25% and then gives a 10% d...
A milk seller assures that he sells at cost price but delivers 900 ml of a mixture that contains 180 ml of water. What percentage...
The difference between the lengths of two parallel sides of a trapezium is 12 cm. The perpendicular distance between these two parallel sides is 60 cm. ...
The school has two types of classes: Math and Science. The average number of students per Math class is x, and the average number of students per Scienc...
"Arjun" can complete a task on his own in 20 days. "Bhuvan" requires 5 days more than "Chirag" to finish the same task, where "Ch...
A rectangular box has dimensions 6 cm, 8 cm, and 10 cm. Find the diagonal of the box.
Relevant for Exams:
