Answer:
23.25%; 62.01%
Explanation:
(a) Amount received:
= No. of shares × selling price
= 100 × $43
= $4,300
Sales deposit = 60% of Amount received
            = 0.6 × $4,300
            = $2,580
Amount paid = No. of shares × Purchase price
           = 100 × $49
           = $4,900
Therefore, Loss = $4,900 - $4,300
              = $600
(b) If buys at $27, then
Amount paid = $27 × 100
           = $2,700
Profit = $4,300 - $2,700
     = $1,600
Loss on investment:
= ($600 ÷ $2,580) × 100
= 23.25%
Profit on investment:
= ($1,600 ÷ $2,580) × 100
= 62.01%