hint : first find the total cost that is needed to buy the apple and its transportation and then find the selling price of the apple assuming the profit as 1000.after that find the selling price of one apple by dividing the selling price of all apples by the number of apples.
step by step explanation:
it is given that the fruit vendor bought 600 apples for 4800.
he also spent 400 on transportation .
therefore the total cost price of fruit is equal to the sum of the cost of apples and cost transportation.that is,
total cost price = cost price + transportation
substitute 4800 as cost price and 400 as transportation in the above formula:
the cost price of the apple

therefore,the total cost price is

the question is asking for a profit of 1000, then let us assume profit as 1000.that is ,
profit

we know the formula of the selling price is given as :
selling price = cost price = profit
substitute 5200 as the value of cost price and 1000 as the value of profit in the above formula:
selling price

selling price

therefore ,the selling price of all the apples is 6200 and there are 600 apples bought by the vendor.then the selling price of one apple is given as:
the selling price of one apple

the selling price of each apple

therefore he has to sell each apple at the price of 10.33 to gain a profit of 1000.
note: note that the total cost is taken as all the money that is needed to buy the apple and other expenses ,like transportation .