Question

If the cost price of 12 articles is equal to the selling price of 8 articles the gain or loss percent is

Answer 1

please see the attachment

Answer 2

(ye apke 1st ques ka ans h)

$ans$

in vertical upward direction.

$explaination$

forces R and Q are anti- parallel or making an angle of 180 degree ,that is there are in opposite direction and also the magnitudes of all forces are equal .

So therefore ,

= Q = -R

Now, resultant of all the forces

= P + Q + R = P + Q - Q

= P [ therefore , Q = - R ]

since, force P is in vertically upward direction therefore the resultant will also in vertically upward direction.

so the body will move vertically direction .