Answer:
The value of the 500 shares at the time of the purchase is $25,000 therefore $7500 had to be borrowed from the broker. With an immediate price change, we don’t need to worry about the interest rate on the loan. If the price
of Xtel stock jumps to p, say, the return on the investment, denoted rp, is given
by;
Explanation:.A) rp =
p × 500−7,500−17,500/17,500
=
500p − 25, 000/15, 000
Hence: r56 =500(56)-25,000/15,000= 28000-25,000/15,000 =20%
r50
= 500(50)-25,000/15,000= 25,000-25,000/15,000= 0%
r44 = 500(44)-25,000/15,000= 22,000-25,000/15,000= -20%
B) For a price p, the margin ratio is
500p − 7,500/500p
A margin ratio 0.3 implies that
500p − 7,500/500p= 0.3=>500p − 7,500=150p
=>p= 7500/350= 21.43
C)For a price p, the margin ratio is
500p − 12,500/500p
A margin ratio 0.3 implies that
500p − 12,500/500p= 0.3=>500p − 12,500=150p
=>p= 12,500/350= 35.71
D). Let p denote the price of Xtel’s stock at the end of the year. The return on this investment, rp, is then
rp =500p − (1.08)7,500 − 17,500/17,500=
500p − 25, 400/17,500
Thus r56= 500(56)-25,400/17,500= 14.86%
r50 = 500(50)-25,400/17,500 = -2.29
and
r44= 500(44)-25,400/17,500= -19.43%
E) For a price p, the margin ratio is then
500p − 7,900/500p
Thus a margin ratio 0.3
implies that;
500p − 5,900/500p
= 0.3 => 500p − 5,900 = 150p
=> p = 5,900/350
= 16.86