If 5 kilos of rice cost ₱275, how much do 12 kilos cost at the same price?
Correct answer: C. ₱660
One kilo costs ₱275 ÷ 5 = ₱55, so 12 kilos cost 12 × ₱55 = ₱660. Finding the cost of one unit first is the simplest way to solve direct proportion problems.
easy