A baker baked 240 tarts. The ratio of the number of chocolate tarts to the number of strawberry tarts was 4:1. He gave an equal number of chocolate and strawberry tarts away and had 7 times as many chocolate tarts as strawberry tarts left. How many tarts did he give away?

Answer 1

c+s = 240
c = 4s
(c-x) = 7(s-x)
solve for x

Answer 2

He gave away 48 tarts.

Answer 3

not so. I think you got your variables mixed up.
check your answer.