Sheila, Purity, and Rose want to rent a house. Sheila has offered to pay five times Purity’s share of the rent. Rose can only afford thrice what Purity pays. If Rose’s share is $1,800, what is the total house rent?
Let's think step by step below.
5400
Purity will pay a third of Rose's share, which translates to 1800 / 3 = 600 dollars.

Sheila has offered to pay 5 * 600 = 3000 dollars.

Combining everyone’s share of the rent will give a total of 600 + 3000 + 1800 = 5400 dollars.

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The answer: 5400