Two circles touch each other at point X. Two common tangents of the circles meet at point P and none of the tangents passes through X. These tangents touch the larger circle at points B and C. If the radius of the larger circle is 15 cm and CP = 20 cm, then what is the radius (in cm) of the smaller circle?
Calculate the accounting profits for a firm, if its economic profits for the year are Rs 60 crores, total implicit costs are Rs 18.5 crores and total explicit costs are Rs 35 crores