I am having trouble putting this into equation can anyone helps me plz thanks
A certain used-book dealer sells paperback books at 3 times dealer's cost and hardback books at 4 times dealer's cost. Last week the dealer sold a total of 120 books, each of which had cost the dealer $1. If the gross profit (sales revenue minus dealer's cost) on the sale of all of these books was $300, how many of the books sold were paperbacks?
Profit per paperback is $2 and profit per hardcover is $3.
The total number of books sold is 120 which gives us the equation:
P + H = 120
The total profit is $300, which gives us the equation:
2P + 3H = 300
if you solve the simultaneous equations, you get P=60 and H=60
Thus the answer is B