When A Student Weighing 45 Kgs Left A Class, The Average Weight Of Th

1.	When A Student Weighing 45 Kgs Left A Class, The Average Weight Of The Remaining 59 Students Increased By 200g. What Is The Average Weight Of The Remaining 59 Students?
Answer» LETS assume average weight of the 59 students = x kgs. => Total weight of the 59 = 59x Given when the weight of this student who LEFT is added, the total weight of the class = (59x + 45) The average weight decreases by 0.2 kgs, when these students included. => (59x+45)/60=(x-0.2) => (59x+45)= 60(x-0.2) => 59x + 45 = (60A - 12) => 45 + 12 = 60x - 59x => x = 57. Lets assume average weight of the 59 students = x kgs. => Total weight of the 59 = 59x Given when the weight of this student who left is added, the total weight of the class = (59x + 45) The average weight decreases by 0.2 kgs, when these students included. => (59x+45)/60=(x-0.2) => (59x+45)= 60(x-0.2) => 59x + 45 = (60A - 12) => 45 + 12 = 60x - 59x => x = 57.

When A Student Weighing 45 Kgs Left A Class, The Average Weight Of The Remaining 59 Students Increased By 200g. What Is The Average Weight Of The Remaining 59 Students?

Answer»

LETS assume average weight of the 59 students = x kgs.

=> Total weight of the 59 = 59*x

Given when the weight of this student who LEFT is added, the total weight of the class = (59x + 45)

The average weight decreases by 0.2 kgs, when these students included.

=> (59x+45)/60=(x-0.2)

=> (59x+45)= 60(x-0.2)

=> 59x + 45 = (60A - 12)

=> 45 + 12 = 60x - 59x

=> x = 57.

Lets assume average weight of the 59 students = x kgs.

=> Total weight of the 59 = 59*x

Given when the weight of this student who left is added, the total weight of the class = (59x + 45)

The average weight decreases by 0.2 kgs, when these students included.

=> (59x+45)/60=(x-0.2)

=> (59x+45)= 60(x-0.2)

=> 59x + 45 = (60A - 12)

=> 45 + 12 = 60x - 59x

=> x = 57.

Discussion

No Comment Found

Related InterviewSolutions

Six Years Ago, The Ratio Of The Ages Of Kunal And Sagar Was 6 : 5. Four Years Hence, The Ratio Of Their Ages Will Be 11:10. What Is Sagar's Present Age?
A Boat, Whose Speed In 15 Km/hr In Still Water Goes 30 Km Downstream And Comes Back In A Total Of 4 Hours 30 Minutes. What Is The Speed Of The Stream? (in Km/hr)?
In Jar A, 120 Litres Milk Was Mixed With 24 Litre Water. 12 Litre Of This Mixture Was Taken Out And 3 Litre Water Was Added. If 27 Litre Of Newly Formed Mixture Is Taken Out, What Will Be The Resultant Quantity Of Water In The Jar? (in Litre)
A Person Covers A Certain Distance By Travelling At A Uniform Speed Of 120 Km/h For 90 Minutes. At What Speed Will He Have To Travel In Order To Cover The Same Distance In 1 Hour 20 Minutes? (in Km/h)
In The Month Of March, Hiten Spent 45% Of His Monthly Salary On Paying Bill And Rent. Out Of The Remaining Salary, He Invested 60% In Ppf And The Remaining He Deposited In Bank. He Deposited Rs. 15,400 In Bank. If In April, He Got An Increment Of 10%, What Was His Salary In April?
24% Of 150 × 3/4= ?
Population Of A Village Increased By 5% From 2007 To 2008 And By 25% From 2005 To 2009. If The Population Of The Village Was 480 In 2007, What Was Its Population In 2009?
A Is Able To Do A Piece Of Work In 15 Days And B Can Do The Same Work In 20 Days. If They Can Work Together For 4 Days, What Is The Fraction Of Work Left?
Nirmal And Kapil Started A Business Investing Rs. 9000 And Rs. 12000 Respectively. After 6 Months, Kapil Withdrew Half Of His Investment. If After A Year, The Total Profit Was Rs. 4600, What Was Kapil's Share Initially ?
When A Student Weighing 45 Kgs Left A Class, The Average Weight Of The Remaining 59 Students Increased By 200g. What Is The Average Weight Of The Remaining 59 Students?