Traditional Culture Encyclopedia - Traditional culture - Aunt Wang has wholesaled three boxes of candy. She learned that 20 kilograms were taken from the first box and put into the second box, and 30 thousand were taken from the second box.

Aunt Wang has wholesaled three boxes of candy. She learned that 20 kilograms were taken from the first box and put into the second box, and 30 thousand were taken from the second box.

Hello, this one?

Look at the first box first, set the original X kg, take out 20 for the stalk first, and then put in 40, so it is x-20+40=90, and x=70.

2. In the same way, look at the second box, which has y kilograms. Put 20 first and then take out 30, so y+20-30=90, y= 100.

Finally, look at the third box, which contains Z kilograms. Put 30 first and then take out 40, so z+30-40=90, z= 100.

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