zeeshan

guys please help me solving these problems 1) a merchant paid $300 for a shipment of x identical calculators .The merchant used 2 of the calculators as demonstrators and sold each of the others for $5 more than the average cost of the x calculators .If the total revenue from the sale of the calculators was $120 more than the cost of the shipment,how many calculators were in shipment ? A) 24 B) 25 C)26 D)28 E)30 2)A corporation with 5,000,000 shares of publicily listed stock reported total earnings of $7.20 per share for the first 9 months of operation .During the final quarter the number of publicly listed shares was increased to 10,000,000 shares,and fourth quarter earnings were reported as $1.25 per share .what are the average annual earnings per share based on the number of shares at the end of the year ? A)$1.83 B)$2.43 C)$4.85 D)$8.45 3)How many litres of pure alcohol must be added to a 80 litre solution that is 25 percent pure alochol in order to produce the solution contains 40 percent or 60 percent alcohol. A)15 litres B)20litres C)40litres D)65litres E)70litres