Question

15. The ratio of ine sum and ine difference of two number is 7:1. Find the ratio of two numbers is​

Answer 1

Answer: let the two numbers be x and y

Given

x+y : x-y = 7:1

Using componendo and dividendo rule

x+y + (x-y) : x+y - (x-y) = 7+1:7-1

2x:2y = 8:6

x : y = 4 : 3

Answer 2

Answer:

Let the two number be x and y.

sum=x+y=7 ----(i)

difference=x-y=1------(ii)

Adding i and ii we get,

x+y=7

x-y=1

2x=8

x=4

Now, putting x=4 in equation ii we get,

x-y=1

4-y=1

y=3

ratio of two number=x/y=4:3