Lucy buy 7kg of nuts to sell

lucy buy 7kg nuts for 10rs

and she is selling them for 75p each bag which contains 350grams of nuts

now we have to find number of bags=7000grams (7kg converted into grams) : 350grams=20bags

now we have to find the profit = 20*75p=15rs

profit=10-15=5

profit percentage=profit/cp*100

= 5/10*100=50%of profit