Question: The average weight of a class of 40 students is 40 kg. If the weight of the teacher is included, the average weight increases by 500 grams. The weight of the teacher is:
A. 40.5 kg
B. 60 kg
C. 60.5 kg
D. 62 kg
E. 64 kg
Answer: C
Approach Solution (1):
Total weight of class before teacher = 40*40 = 1600
After adding teacher total weight = 41*40.5 = 1660.5
So weight of teacher is 1660.5 - 1600 = 60.5
Correct option: C
Approach Solution (2):
Total weight of students = 40* avg weight =1600;
Total Weight of students plus teacher = 41* average weight (40.5) = 1660.5
Weight of teacher = 1660.5 - 1600 = 60.5 kg
Correct option: C
Approach Solution (3):
Weight of the teacher = Total weight of 40 students and teacher - total weight of 40 students = 41 x 40.5 - 40 x 40 kg = 60.5kg
Correct option: C
“The average weight of a class of 40 students is 40 kg. If the weight of the teacher is included, the average weight increases by 500 grams. The weight of the teacher is:”- is a topic of the GMAT Quantitative reasoning section of GMAT. This question has been taken from the book “GMAT Official Guide Quantitative Review”. To solve GMAT Problem Solving questions a student must have knowledge about a good amount of qualitative skills. The GMAT Quant topic in the problem-solving part requires calculative mathematical problems that should be solved with proper mathematical knowledge.
Suggested GMAT Problem Solving Questions:
- Is Square Root = Always Positive? GMAT Problem Solving
- \(\frac{15^{11}-15^{10}}{14}=?\) GMAT Problem Solving
- For How Many Values of k is 1212 the Least Common Multiple GMAT Problem Solving
- A Contractor Estimated that his 10-Man Crew Could Complete the Construction in 110 Days if There Was no Rain. GMAT Problem Solving
- If n = \(3^8\)– \(2^8\), Which of the Following is Not a Factor of n? GMAT Problem Solving
- Two Consultants, Mary and Jim, Can Type up a Report in 12.5 Hours and Edit it in 7.5 Hours. GMAT Problem Solving
- GMAT Problem Solving - The Price of Raw Materials Has Gone up by 15%
- Greg Assembles Units of a Certain Product at a Factory. GMAT Problem Solving
- After 6 Games, Team B Had an Average of 61.5 Points Per Game. GMAT Problem Solving
- Find The Number Of Trailing Zeros In The Product Of (11) GMAT Problem Solving
- Find The Altitude Of An Equilateral Triangle Whose Side is 20 GMAT Problem Solving
- Which of the following is the value of √3√0.000064? GMAT Problem Solving
- Two Dice are Thrown Simultaneously. What is the Probability of Getting Two Numbers Whose Product is Even? GMAT Problem Solving
- The Smallest 3-Digit Positive Integer Obtained By Adding Two Positive Two-Digit Numbers GMAT Problem Solving
- Train A Leaves New York at 9am Eastern Time on Monday, Headed for Los Angeles at a Constant Rate GMAT Problem Solving
- An Express Train Traveled At An Average Speed of 100 Kilometers Per Hour GMAT Problem Solving
- If m Lies Between The Integers p and s On the Number Line Shown GMAT Problem Solving
- A Cube Of Side 7 cm Is Coloured On Pair of Opposite Faces By Red, Green and Yellow Shades GMAT Problem Solving
- If x2 − 5x − 6 = 0, which of the following could be x ? GMAT Problem Solving
- How Many Numbers Between 1 and 1000, Inclusive Have an Odd Number of Factors? GMAT Problem Solving
- A palindrome is a number that reads the same forward and backward GMAT Problem Solving
- Three Cars Leave From A To B In Equal Time Intervals GMAT Problem Solving
- An Inlet Pipe can Fill in an Empty Cistern in 30 minutes GMAT Problem Solving
- A Zookeeper Counted the Heads of the Animals in a Zoo and Found it to be 80 GMAT Problem Solving
- A Shop Stores x kg of Rice. The First Customer Buys half this Amount Plus half a kg of Rice GMAT Problem Solving
- In a Class of 120 Students Numbered 1 to 120, All Even Numbered Students Opt for Physics GMAT Problem Solving
- Machine A Produces bolts at a Uniform Rate of 120 Every 40 seconds GMAT Problem Solving
- Out of 7 Consonants and 4 Vowels, How Many Words of 3 Consonants and 2 Vowels Can be Formed? GMAT Problem Solving
- 4 Bells Toll Together at 9:00 A.M. They Toll After 7, 8, 11 and 12 Seconds GMAT Problem Solving
- 12 Marbles are Selected at Random from a Large Collection of White, Red, Green and Yellow Marbles GMAT Problem Solving
- Find the greatest number that will divide 43, 91 and 183 GMAT Problem Solving
- Of the 150 Houses in a Certain Development GMAT Problem Solving
- A man can hit a target once in 4 shots. If he fires 4 shots in succession GMAT Problem Solving
- If 75 Percent of a Class Answered the First Question on a Certain Test Correctly GMAT Problem Solving
- A Clock Strikes 4 taking 9 seconds. GMAT Problem Solving
- What is the Largest Power of 3 Contained in 200! GMAT Problem Solving
- Find The Value Of x GMAT Problem Solving
- GMAT Problem Solving - Which of the following expressions has the greatest values?
- GMAT Problem Solving – If @ x=x2/2x2-2 , What is the Units Digit of @ (@4)?
- GMAT Problem Solving – What is the product of all possible solutions of the equation |x+2|- 5|x+2| = -6?
- GMAT Problem Solving – Metropolis Corporation has 4 Shareholders
- GMAT Problem Solving – What is the number of integers from 1 to 1000, inclusive that are not divisible by 11 or by 35?
- GMAT Problem Solving – If m is Three Times n, and if 2n + 3 is 20% of 25, What is the value of m?
- GMAT Problem Solving – If Ben Were to Lose the Championship, Mike would be the Winner
- GMAT Problem Solving – A Train Travelling at a Certain Constant Speed takes 30 seconds
- GMAT Problem Solving –A circle with a radius R is inscribed into a square with a side K.
- GMAT Problem Solving –The square of \(5^\sqrt2)\ =?
- GMAT Problem Solving –A farm has chickens, cows and sheep.
- GMAT Problem Solving –If g is an integer what is the value of (-1)^g^4-1?
- GMAT Problem Solving –What is the area of the triangle with the following vertices L(1,3) M(5,1) and N(3,5)?
*The article might have information for the previous academic years, please refer the official website of the exam.