Question

On Monday the Pied Piper caught 1000 rats in a city.

On Tuesday he caught 10% fewer rats than on Monday.
On Wednesday he caught 20% more than on Tuesday.
On Thursday he caught 30% fewer than on Wednesday.
On Friday he rested.

How many rats did he catch in total that week?

Answer 1

3124

Explanation:

1000 rats caught on Monday. 10% of 1000 is 100 so, 1000-100=900 so 900 rats caught on Tuesday. 20% of 900 is 180 so, 900-180=720 so 720 rats caught on Wednesday. 30% of 720 is 216 so, 720-216=504 so 504 rats caught on Thursday. None were caught on Friday.

Add up the numbers and you'll get your answer;

1000+900+720+504= 3124

Answer 2

3124

Explanation:

1000 rats caught on Monday. 10% of 1000 is 100 so, 1000-100=900 so 900 rats caught on Tuesday. 20% of 900 is 180 so, 900-180=720 so 720 rats caught on Wednesday. 30% of 720 is 216 so, 720-216=504 so 504 rats caught on Thursday. None were caught on Friday.

Add up the numbers and you'll get your answer;

1000+900+720+504= 3124