IBEasyNumber7–9

Scaling a Recipe and Buying Whole Packets

Escalar uma Receita e Comprar Pacotes Inteiros

A recipe for $4$ people uses $300$ g of rice and $500$ ml of stock. A cook prepares the same dish for $10$ people, keeping every ingredient in the same ratio. Rice is sold only in packets of $500$ g. How much rice and stock are needed, and how many packets of rice must be bought?

Find the single number that turns a portion for four into a portion for ten, and apply it to both ingredients. The packet question is not answered by that number alone — packets do not come in pieces.

Solution

Step 1 of 9

1.Scale factor: