Mrs. Thomas bought 5 kg of flour. She used 1/5 of it to make muffins and 1/5 of the remainder to make cookies. How much flour did she have left?
2/5 of 5 is 2, so 5-2=3 left
Thanks, but the answer is supposed to be 3 1/5 kg. Not sure how they came up with that. I see where/how you came up with your answer. This Singapore math makes no sense!
To find out how much flour Mrs. Thomas had left, we need to subtract the amount she used to make muffins and cookies from the initial amount she bought.
1. Start by finding the amount of flour Mrs. Thomas used to make muffins. She used 1/5 of the 5 kg of flour, so multiply 5 by 1/5:
5 kg * 1/5 = 1 kg
2. Next, subtract the amount used for muffins from the initial amount to find the remainder:
5 kg - 1 kg = 4 kg
3. Lastly, find the amount of flour she used to make cookies. She used 1/5 of the remaining 4 kg of flour:
4 kg * 1/5 = 0.8 kg
4. Subtract the amount used for cookies from the remaining amount:
4 kg - 0.8 kg = 3.2 kg
Therefore, Mrs. Thomas has 3.2 kg of flour left.