AVERAGE problems

-
Defence Academy Coimbatore A leading coaching academy for Sainik, Military and RIMC Schools, NDA, IMA, AFCAT SSB, FSB Interview http://www.ssbcoaching.com call 094437 20076


1.  The mean weight of a group of seven boys is 56 kg. The individual weights (in kg) of six of them are 52, 57, 55, 60, 59 and 55. Find the weight of the seventh boy.



Solution:
Mean weight of 7 boys = 56 kg.
Total weight of 7 boys = (56 × 7) kg = 392 kg.
Total weight of 6 boys = (52 + 57 + 55 + 60 + 59 + 55) kg
= 338 kg.
Weight of the 7th boy = (total weight of 7 boys) - (total weight of 6 boys)
= (392 - 338) kg
= 54 kg.
Hence, the weight of the seventh boy is 54 kg.

Comments

Post a Comment

Popular posts from this blog

RIMC December 2017 General Knowledge Solved paper

-
Defence Academy Coimbatore A leading coaching academy for Sainik, Military and RIMC Schools, NDA, IMA, AFCAT SSB, FSB Interview http://www.ssbcoaching.com call 094437 20076 RIMC December 2017  General Knowledge Solved paper Instructions: 1.         There are total of 75 Questions and each question carries one Mark. There is no negative marking for a wrong answer. 2.         Do not over write, dual answers shall not fetch any marks. 3.         All Questions are to be answered in the Question paper only. SECTION “A” (Tick) The correct answer Q.1 Which of the following part of the sun is easily visible only during total Solar Eclipse? A Core B Photosphere C Sunspot D Corona Q.2.Earth’s seasons are caused by which of the following? a) The belt of the earth’s rotation relative to the ecliptic...
Read more

GK Questions for RIMC- RMS Compiled by www.sainikrimc.com

-
Image
Defence Academy Coimbatore A leading coaching academy for Sainik, Military and RIMC Schools, NDA, IMA, AFCAT SSB, FSB Interview http://www.ssbcoaching.com call 094437 20076 GK Questions - First in India 21. Name of the first Indian to win Magsaysay Award ? Acharya Vinoba Bhave in 1958 22. Name of first Indian to win Nobel Prize ? Rabindranath Tagore 23. First Scientist of India to get Nobel Prize in Economics ? Dr. Amartya Sen 24. Name of the First Indian Submarine ? I.N.S. Cauveri 25. Name of the first person to get Paramvir Chakra Major Somnath Sharma 26. First Indian to go into space ? Sqn. Ldr. Rakesh Sharma 27. Name of first Indian to get Bharat Ratna Award ? Dr. S Radhakrishnan 28. Name of first speaker of Lok Sabha ? G.V. Mavlankar from 1952-1957 29. Name of first president of Indian National Congress ? W.C. Banerjee 30. First Presid...
Read more

Picture Perception - Model story

-
Image
PPDT STORY ON A DEAD BODY SCENCE: SET 1 Picture Perception and Description Test: A Dead body Scene I n this  PPDT story  you can have a general idea of how to write a PPDT  story on Dead Body  scene . THE BEST WAY TO PREPARE FOR  BASIC SCREENING TEST : PPDT IS TO  PRACTICE  MORE AND MORE AND BOOST YOUR WRITING SPEED. Sample PPDT picture of Dead body Scene What have you seen in the picture A room scene, probably a dead body on a bed & two people sitting on the side. A table is placed on the write with medicines and a stand at the back of bed. Characters involved Three including a dead body Age profile 18 to 20 years and 30 to 35 years Mood Negative What has already happened Probably a martyr lead down the life for the nation Present happenings Cremation and the dead body of the martyr before emotional seen with due encouragement to take revenge with the enemy Final outcome Productive and chall...
Read more