10/n = 40/20

10/n=40/20 please explain how to find the value of n
in Pre-Algebra Answers by

Your answer

Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.
Anti-spam verification:
To avoid this verification in future, please log in or register.

1 Answer

there are two ways to solve for n

1st:

10 x 4=40

n x 4=20, so n must be 5

2nd: cross multiply

10                  40

____ =     ---------------

n                   20

 

10 x 20 =n x 40

200=n x 40

n=5
by Level 8 User (35.3k points)

Related questions

2 answers
5,10,20,40 find the 13th term
asked Jul 17, 2016 in Other Math Topics by neleem | 3.2k views
2 answers
20+02=10,40+08=05,60+05=12,80+16=?
asked Mar 13, 2016 in Other Math Topics by simran pandey | 1.5k views
1 answer
what is the relation? (0, 100) (10, 90) (20, 80) (30, 70) (40, 60)
asked Jan 31, 2016 in Other Math Topics by Masselina Damalie | 681 views
7 answers
1 , _ , 5 , 10 , 20 , 40 , 80
asked Oct 4, 2012 in Algebra 1 Answers by anonymous | 9.6k views
1 answer
solve for n: -3 3/4n -4 2/5= -8 31/40
asked Oct 1, 2013 in Algebra 1 Answers by eightgrademath Level 1 User (120 points) | 593 views
1 answer
npr=40[n-1p2]
asked May 19, 2013 in Algebra 2 Answers by anonymous | 580 views
1 answer
n/33=40/88
asked Jan 4, 2012 in Pre-Algebra Answers by anonymous | 1.0k views
1 answer
1-5/40=n/d
asked Nov 17, 2011 in Pre-Algebra Answers by anonymous | 1.1k views
Welcome to MathHomeworkAnswers.org, where students, teachers and math enthusiasts can ask and answer any math question. Get help and answers to any math problem including algebra, trigonometry, geometry, calculus, trigonometry, fractions, solving expression, simplifying expressions and more. Get answers to math questions. Help is always 100% free!

Most popular questions within the last 3000 days

  1. 50+50-25X0+2+2= (19)
  2. it takes 10 road workers 5 days to complete a road repair when working 2 hours a day.Working at the same pace,how many days will it take 2 people working 5 hours a day to finish it? (3)
  3. Solve 15 -1(12÷4+1)? (4)
  4. 8:4(5+2) (3)
  5. How can i represent 1/3; 3/3; 7/3; 10/3 and 15/3 on a number line? (1)

Most popular tags

87,516 questions
100,281 answers
2,420 comments
733,585 users