Answers

  • qais
  • Content Quality
2015-11-29T21:01:10+05:30

This Is a Certified Answer

×
Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
Initially, N1/N2 = 3x/5x
addind 10 on both, becomes,
(3x+10)/(5x+10)= 5/7
⇒21x+70=25x+50
⇒4x=20
⇒x=5

hope this is the best explanation :)
0
2015-11-29T21:06:24+05:30

This Is a Certified Answer

×
Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
Given the ratio of two numbers = 3:5
let the numbers be 3x and 5x
the numbers increased by 10 = 3x+10   and 5x+10
the ratio is given as 5:7 
Therefore 3x+10 : 5x+10 = 5 : 7
Product of means = Product of extremes
7(3x+10) = 5(5x+10)
21x +70 = 25x+50
70-10 = 25x- 21x
20 = 4x
4x = 20
x = 20/4
Therefore x = 5
The numbers are
3x = 3×5 = 15
5x = 5×5 = 25.
0