Verified answer

It seems the condition a+b=25 is not correct

It should be a+b=24

a - b = 16

a + b = 24

Add these two equations , we get

2a = 40

a = 40/2

a = 20

Substitute a=20 value in the first equation

We have 20 - b = 16

- b = 16 - 20 = - 4

So b = 4

a stands for 20 and b stands for 4

These values satisfy all the given conditions

Are you sure it should be a+b = 25

If you rearrange a÷b = 5 you get a=5b

If you rearrange ab = 80 you get a = 80/b

Solving simultaneously you get

5b = 80/b

5(b^2) = 80

b^2 = 16

b = 4

Sub b = 4 back into original equation you get a = 20

20÷4=5

20 x 4 = 80

20 - 4 = 16

natural numbers