SOLUTION: one number is 2/5 of another . the sum of their two numbers is 21.find the two numbers.
rational expressions
Algebra.Com
Question 681861: one number is 2/5 of another . the sum of their two numbers is 21.find the two numbers.
rational expressions
Answer by ReadingBoosters(3246) (Show Source): You can put this solution on YOUR website!
x is one number
y is another number
...
x+y = 21 : rearrange as x = 21-y
...
21 - y = (2/5)y
...
Multiply the entire equation by 5
105 - 5y = 2y
...
Isolate the y variable
105 = 2y + 5y
105 = 7y
...
Divide both sides by 7
x = 21-15 =
.....................
Have more questions?
Email: HomeworkHelpers@readingboosters.com
Delighted to help.
-Reading Boosters
Website: www.MyHomeworkAnswers.com
Wanting for others what we want for ourselves.
RELATED QUESTIONS
One number is 3 times another. If the sum of their reciprocals is 4/21, find the two... (answered by praseena,chitra)
one number is two times another. If the sum of their reciprocals is 1/2, find the two... (answered by jorel1380,edjones)
one number is 5 times another. The sum of their reciprocals is 1/5. Find the two... (answered by mukhopadhyay,stanbon)
One number is 5 times another. If the sum of their reciprocals is 1/5 , find the two... (answered by edjones)
One number is 5 times another. If the sum of their reciprocal is 6/35, find the two... (answered by Earlsdon)
One number is 3 times another. If the sum of their reciprocals is 1/5 , find the two... (answered by stanbon)
One number is 3 times another. If the sum of their reciprocals is 1/5 , find the two... (answered by stanbon)
One number is 4 times another. If the sum of their reciprocals
is 5/12 find the two... (answered by josmiceli)
One number is 5 times as large as another. The sum of their reciprocals is 245. Find the... (answered by ankor@dixie-net.com)