In a shop, a small pack of powder soap which is 500 g is sold for N250 and a large pack which is 1.2 kg is sold for N500. Which is cheaper to buy and why?
Step-by-step explanation: Calculate the cost per kilogram by dividing the cost by the weight. For the 500g you get 2g per N. For the 1.2kg you get 2.4g per N.
