Question
Average of 20 numbers is 90. Average of first 8 numbers
is 114 while average of last nine numbers is 40. If ninth number is 25% less than the tenth number which is equal to the eleventh numbers then find the tenth number.Solution
Sum of ninth, tenth and eleventh number = 20 × 90 – 8 × 114 – 9 × 40 = 528 Let tenth number = x = eleventh number So, ninth number = 0.75 × x = 0.75x So, x + 0.75x + x = 528 Or, 2.75x = 528 Or, x = 192
In February 2020, which of the following places was in-principle approved as a site of a new Major Port?
International Rice Research Institute (IRRI) is located in:
In Aadhaar Paperless Offline e-kyc, the XML file contains demographic details such as Name, DOB, Gender, and Address. How is the photo encoded within th...
The Government of India launched a scheme for critical minerals. Which of the following is NOT considered a critical mineral?
As of October 2019, how many nuclear power plants are present in India?
Who founded the Hindu reform organisation Brahmo Samaj?
What is the title given to the head of a Joint Hindu Family (HUF) business?
Freedom fighter Agadhu Samantra (Orissa) served the British-Indian Army. Later on he left the British service to join the Indian National Army (INA) in ...
The scientific study of rocks is called as
Who coined the term 'protoplasm'?
Relevant for Exams:
