There are nine people in an elevator, seven men and two women. The two women weigh 115 and 110 respectively. The average weight of all nine people is 179 pounds. What is the average weight of the men in the elevator?
First detailed report that aids me that i receive will receive a thumbs up and a best answer. Thank you.
2006-11-30 13:18:34 · 6 answers · asked by Pop T 2 in Education & Reference ➔ Homework Help
Add 115 and 110 together (225). Take this number and subrtact it from [179 multiplied by 9]. Then take that number and divide it by seven.
You should get 198 pounds for all 7 men.
2006-11-30 13:24:21 · answer #1 · answered by Anonymous · 1⤊ 0⤋
Multiply 179 by the total number of people, 9. Then subtract the weight of each woman. That should leave you with the total weight of the men. Divide that number by the number of men in the elevator and you should have your answer.
2006-11-30 13:26:41 · answer #2 · answered by Scarlet 3 · 1⤊ 0⤋
(115 + 110 + 7x) / 9 = 179
(115 + 110 + 7x) = 179*9 = 1611
7x = 1611 - 115 - 110
7x = 1386
x = 1386/7 = 198
198 lbs., answer
2006-11-30 14:15:44 · answer #3 · answered by david d 2 · 0⤊ 0⤋
The total weight of all people is avg weright times total number of people = 9 x 179= 1611.
subtract womens weight 1611-225= ???
divide ???? by number of men (7)
Now you sovled it yourself; I didnt give you the answer.
2006-11-30 13:25:33 · answer #4 · answered by Rockies VM 6 · 1⤊ 0⤋
take total amount of people X by average weight that gives you a total weight of all people, Subtract weight of women that gives you total weight of the men then divied by the amount men= mens average weight 9X179=1611-225=1386 /7=198 lbs answer is 198 lbs
2006-11-30 13:29:58 · answer #5 · answered by bwaaaare 3 · 0⤊ 0⤋
that isn't as confusing as you are able to think of study it slowly and it particularly is hassle-free to understand. assume those are your scores would be expressed as probabilities (or as factors) assessments 80% ( 2000 factors quizzes 70% ( 3500 factors homework fifty 5% ( 4000 factors participation sixty 5% ( one thousand factors in case you utilize factors to degree your grades then the weighted normally happening is calculated: 2000 pts * 50% = one thousand weighted pts for assessments 3500 pts * 20% = seven hundred weighted pts for quizzes 4000 pts * 20% = 800 one thousand pts * 10% = a hundred So the entire of all weighted factors is one thousand + seven hundred + 800 + a hundred = your factors score for all factors is two,500 factors (after weighting) ======================================... although in case your grades are expressed as probabilities (eg in case you acquire 80% for assessments then this would mean in the above occasion which you have scored 2000 factors out of a achieveable optimal of 2500 factors) then you definitely calculate the normally happening weight like this: 80% * 50% = 40% (for assessments) after being weighted 70% * 20% = 14% (for quizzes after being weighted fifty 5% * 20% = 11% sixty 5% * 10% = 6.5% So your weighted normally happening proportion for all 4 factors is 40 + 14 + 11 + 6.5 ie seventy one.5% as an overall grade
2016-10-04 14:11:36 · answer #6 · answered by ? 4 · 0⤊ 0⤋