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Liangliang went to the store to buy stationery, which cost 50 cents and 1 yuan coins. Total price 9.5 yuan. You know 50 cents and 1 yuan.
The topic is incomplete. Let me help you finish it. Liangliang went to the store to buy stationery, and spent * * * 12 pieces of fifty cents and one yuan, with a total price of 9.5 yuan. Do you know how much fifty cents and one yuan cost respectively?

( 1× 12-9.5)÷( 1-0.5)=5

12-5=7

Answer: Liangliang spent five quarters and seven 1 yuan coins.

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