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75% of a number is 24. What's 516? There are 5 tons of coal in a pile. How many tons are left when 15 tons are transported away?
(1) A: 516 of this number is 10. (2) 5-15 = 445 (tons) a: there are 445 tons left
75% of a number is 24 more than 3 / 5 of it. What's the number?
24÷（75%-3/5）=160
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