Question

find the two numbers which on adding gives 60 and on substraction gives 30.​

Answer 1

Answer:

Step-by-step explanation:

Given, one number =x

Then, another number =(60–x)

∴ Difference =(60–x)–x=60–2x

We are given that difference between the two numbers is 30.

So, the equation formed is 60–2x=30

⇒ –2x=30–60

⇒ –2x=–30

⇒ 2x=30

⇒x=30/2=15

Other number=60−x=60−15=45

Answer 2

Answer:

a+b=60

a-b=30

______

2b= 30

b=15

a+15=60

a=60-15

a=45

45+15=60

45-15=30