SSC CGL 10 June 2019 Shift-1 Question 7

Question 7

The average of 9 numbers is 40. If the average ofthe first five numbers is 38 and that of the last five is 50, then what is the fifth number?

Solution

Sum of 9 numbers = $$9\times40=360$$

Sum of 1st five numbers = $$5\times38=190$$

Sum of last five numbers = $$5\times50=250$$

Fifth number = (250+190)-360=80



Create a FREE account and get:

  • Free SSC Study Material - 18000 Questions
  • 230+ SSC previous papers with solutions PDF
  • 100+ SSC Online Tests for Free

Comments

Register with

OR

Boost your Prep!

Download App