Adam buys 4kg of sweets and pays £10 for them. Adam puts all of the sweers into bags with 250g in each bag. He sells the bags for 70p each. All the bags of sweets are sold, what is the percentage profit?

First you would figure out how many bags of sweets Adam made, this would be done by converting 4kg into grams (x1000) so 4 x 1000 = 4000g. Then you would divide the 4000g by 250g to see that 16 bags of sweets were made. Next you would figure out how much money Adam ended up with by multiplying the amount of bags (it says in the question that Adam sold all of the bags) by how much he sold them for, this would be 16 x £0.70 = £11.20, as you convert pence into pounds. Then you move onto the percentage profit. This is done by subtracting the initial cost (£10) from the money Adam ended up with (£11.20) and dividing all of this by the initial cost. (£11.20-£10)/£10 = 0.12 = 12%. Alternatively you could do the final amount divided by the initial cost and subtract 100% away from it: £11.20/£10= 1.2 = 112%. 112% - 100% = 12%.