If 6 lemons cost 90p what is the price of 1 lemon and four lemons

75p is the correct answer because 1 lemon is 15p

If 6 lemons cost 90p divide 90 by 6 and you'll get 15 which is how much one lemon cost. Once you know how much one lemon cost you multiply that number by 5 to get the cost of 5 lemons.

15*5=75

so 5 lemons would cost 75p.