Jill spent 9/10 of her money on 20 muffins and 5 croissants. If each muffin costs twice as much as a croissant, how many croissants could Jill buy with the rest of her money?
cost of cr ---- x
cost of muffin --- 2x
Jill's money --- m
9/10 m = 20(2x) + 5x = 45x
m = 50x
so she has 1/10 of 50x left or
she has 5x of her money left
each cr costs x, so she buy 5 more croissants
check with some actual numbers. , let x = 1
Suppose she had $50
then she spent $45, each cro.. cost 1 and each muffin costs $2
she has $5 left, and since each cr costs $1, she can buy 5 of those