All Pakistan Music Conference (APMC) was held on 15 September 1959 to promote classical music, this organization continues to hold annual music festivals in different cities of Pakistan even today. This conference was held in Lahore.

Roshan Ara Begum, a Pakistani classical vocalist, was the founding member of APMC.

Profit = 25%     S.P = 250     C.P = ?

By using the formula:

S.P=[ 100 +Gain]/100 * C.P 

250= [ 100 + 25]/100 * C.P

250 * 100 = C.P/125

⇒ C.P = 200

The square has four equal sides,

So distance covered twice = 8 km 

distance covered in pone side = 8/4 = 8/8 = 1 km

Let the numbers be x and x + 2.

Then, (x + 2)² – x² = 84

 4x + 4 = 84

 4x = 80

 x = 20.

 The required sum = x + (x + 2) = 2x + 2 = 42