A bucket holds 25 liters of water. 17 liters 250 ml of it was taken out and then 3 liters 780 ml was poured in it. How much water is there in the bucket now?

Question

a. 3 L and 970 ml

b. 11 L and 280 ml

c. 7 L and 750 ml

d. 38 L and 470 ml

Answer 1

A bucket holds 25 liters of water. 17 liters 250 ml of it was taken out and then 3 liters 780 ml was poured in it. How much water is there in the bucket now?

There are 1000 ml in 1 liter. When numbers are too large to subtract, you must borrow (remember grade school subtraction).

25 liters 0 ml

- 17 250

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24 liters 1000 ml

- 17 250

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7 liters 750 ml

+ 3 780

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10 liters 1530 ml

11 liters 530 ml [This works like a "carry" in addition]