mrs tan bought 10 kg of rice .if she cooked 400g of rice everyday how many days did the bag lasts?

1 kg = 1,000 g

10 kg = 10,000 g

10,000 / 400 = 25

OR

400 g = 0.4 kg

10 / 0.4 = 100 / 40 = 25

Sorry.

10 / 0.4 = 100 / 4 = 25

To find out how many days the bag of rice lasted, we can follow these steps:

Step 1: Convert the total amount of rice in the bag to grams.

Since Mrs. Tan bought 10 kg of rice and there are 1000 grams in 1 kilogram, the total amount of rice in grams is:
10 kg * 1000 g/kg = 10,000 g

Step 2: Divide the total amount of rice by the amount of rice cooked each day.

10,000 g / 400 g/day = 25 days

Therefore, the bag of rice would last for 25 days if Mrs. Tan cooked 400g of rice every day.