Xiaoli bought a total of 10 stamps with 60 cents and 80 cents. For 7 yuan and 20 cents, she bought a stamp with 60 cents______ I bought 80 cent stamps______ There are two | Math enthusiast | Mathematical art

Xiaoli bought a total of 10 stamps with 60 cents and 80 cents. For 7 yuan and 20 cents, she bought a stamp with 60 cents I bought 80 cent stamps There are two

According to the meaning of the title, we get x + y = 100.6x + 0.8y = 7.2, and the solution is x = 4Y = 6. Then we get 4 stamps for 60 and 6 stamps for 80

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