How many positive integers less than 1000 are multiples of 5 and are equal to 3 times an even integer?

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How many positive integers less than 1000 are multiples of 5 and are equal to 3 times an even integer?
How many positive integers less than 1000 are multiples of 5 and are equal to 3 times an even integer?

How many positive integers less than 1000 are multiples of 5 and are equal to 3 times an even integer?
Answer:30
小于1000的正整数是5的倍数又是3乘以一个偶数
也就是就是5的倍数又是6的倍数,用1000/(5*6)=30……10
也就说有30个

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