Question

Harriet bought 2kg of potatoes for $1.50 how much would it cost for 1 kg

Answer 1

1kg will cost %0.75 because $1.50 divide by 2 is 0.75

Answer 2

2 kg = 1.5 
1 kg is half of 2 kg, therefore, half the price. Half of 1.5 dollors = 75 cents