Millie works 8 hours each saturday and earns £50. on a saturday she spends £2.75 on bus fares and £4.25 on lunch. what percentage of her earnings does she spend on bus fares and lunch?

The answer is 0.14 or fourteen percent (14%). I arrived to this answer through simply finding the sum of her spending on bus fares and lunch (2.75 + 4.25) and came up with 7. Then, I divided it by her total earnings which is 50 - which led me to have the answer of .14 or 14%. 

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Ithink the answer is c just trying to others