Question

8. A number is increased by 25% and then
decreased by 25%. Find the net increase or
decrease percentage.​

Answer 1

Answer:

hope it helps answer..........

Answer 2

$\fbox\pink{A}\fbox{N}\fbox\red{S}\fbox{W}\fbox\red{E}\fbox\pink{R}$

One incident ray in the illuminating beam is shown (red line); it meets the stone at a point where the normal to the surface is oriented 0 degrees to the right of the vertical axis. At point 1 and 2, rays are refracting and they appear from the incident ray, one reflected and another one refracted where both are with certain power carrie.