Sarah spent 1/3 of her monthly budget on food and 3/4 of her monthly budget on gasoline. Sarah has gone over budget and has spent $221 on food and gas. What is Sarah’s monthly budget?

Sarah spent 1/3 of her monthly budget on food and 3/4 of her monthly budget on gasoline. Sarah has gone over budget and has spent $221 on food and gas.

What is Sarah’s monthly budget?