Two years ago one egg cost one naira less than last year this year an egg cost 2 naira more than last year the cost of the 11 eggs 2 years ago was the same as the cost of an egg last year
Answers
Given : Two years ago an egg cost 1 less than last year. this year an egg costs 2 more than last year .
the cost of 11 eggs two year ago was the same as the cost of eight eggs this year .
To Find the cost of an egg last year
Solution:
Cost of egg last year = x
Two years ago an egg cost 1 less than last year.
=> Hence cost of egg Two years ago = x - 1
the cost of 11 eggs two year ago = 11 (x - 1)
his year an egg costs 2 more than last year .
=> Hence cost of egg this year = x + 2
cost of eight eggs this year = 8(x + 2)
Equate
11 (x - 1) = 8(x + 2)
=> 11x - 11 = 8x + 16
=> 3x = 27
=> x = 9
cost of an egg last year is 9
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