Question

In 1990 an egg cost 2c less than in 1991. In 1992 an egg cost 4c more than in 1991. The cost of 11 eggs in 1990 was the same as the cost of 8 eggs in 1992. Find the cost of an egg in 1991.​

Answer 1

18

Explanation:
given that the eggs cost 16ct in 1990 and 22ct in 1992 you can calculate

16ct+2ct=18ct and 22ct-4ct=18ct

see this vid for full explanation