Hi there, hope you're all doing well. I don't konw whether these sentences are grammatically correct or not. Maybe there's another way to say it, especially the third one. Thanks in advance for your useful corrections ;-)

1 In this container there is leftover food for three days
2 In this container there is 3 days' worth of leftover food
3 He bought at the mall 2000 euros' worth of furniture.

Question

Hi there, hope you're all doing well.  I don't konw whether these sentences are grammatically correct  or not. Maybe there's another way to say it, especially the third one. Thanks in advance  for your useful corrections ;-)

1 In this container there is  leftover food for three days
2 In this container there is 3 days' worth of leftover food 
3 He bought at the mall  2000 euros' worth of furniture.

Answer

Hi Queti

1 is good

2 I think should be plural. There are 3 days

3 As Adrian already said, change the syntax.

Answer

1 and 2 are grammatically correct, and both sound natural.
3 is also grammatically correct, but normally the ‘at the mall’ would come at the end :
‘He bought 2000 euros' worth of furniture at the mall’.