A charity is delivering chicken and rice dinners to a shelter for the hungry. They have a hundred plates to deliver. The rice cost ten cents a plate and the chicken cost forty cents a plate. How many dollars did the charity spend on the food for the dinners?
Each chicken and rice plate cost 10 + 40 = <<10+40=50>>50 cents.
The charity spent 50 * 100 = <<50*100=5000>>5000 cents for the dinners.
There are 100 cents in a dollar, so the charity spent 5000 / 100 = $<<5000/100=50>>50 for the dinners.
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