Below is the cost of eggs at a local shop in Burnley:
*Cost of one snake egg: 5 pence.
*Cost of one Echidna egg: 1 penny
*Cost of 20 Bird eggs: 1 penny
John entered the shop need to buy
*All types of eggs.
*Needs to buy birds egg in multiple of 20.
* Need to buy 100 eggs
How many Snake, Echidna, and Bird eggs does John need to buy considering he got only 100 pence?