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The seller sold 40% of the fruit on the first day, 2/3 of the rest on the second day, and the remaining 20 kg on the third day. How much fruit did he sell in those three days?

Correct answer:

x =  100 kg

Step-by-step explanation:

40/100x + 2/3·(x-40/100x) + 20 = x

40/100·x + 2/3·(x-40/100·x) + 20 = x

60x = 6000

x = 6000/60 = 100

x = 100

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