heyy
please can i have help on these two questions and please can i have an explanation for how to work them out too!

1. the price of an mp3 player is increased by 8% to £52.92.
what was the original price?

2. the population of blackbirds in a park is counted every year.
the population decreases by 24% to 323.
what was the original population?

3. marcia bought a car for £34 500 and sold it for £29 700.
what was a percentage loss?

thank you soo much :)