Question

Find the cost 100g rice at 95p per half a kg

Answer 1

1/2kg = 500g 500 x 2= 1000g costing £1.90 Divide this by ten to get 100g and your answer is 19p

Answer 2

`half a kg= (1000g)/(2)=500g \\\\ 500g............95p \\ 100g............x \\\\ x=(100*95)/(500) \\\\ x=(95)/(5) \\\\ \boxed{x=19p}`