Question 1205896
Mrs Lee went shopping with a certain amount of money. If she wanted to buy 15 shirts she would need another $150. If she bought 5 shirts she would have $250 left.  How much did a shirt cost.

Let Mrs. Lee have $ x with her when she went shopping

When she wants to buy 15 shirts she feels short of $150

Total cost of 15 shirts = x+150

Cost of each shirt will be (x+150)/15

If she bought 5 shirts amount left with her is 150

5*(x+150)/15 + 250 = x

(x+150)/3 = x-250

x+150 = 3(x-250)

x+150 = 3x -750

Rearrange and simplify

3x-x = 150+750

2x = 900

x =450

She had $450

Let cost of shirt be y

15y = 450+150

15y = 600

y= 40

Cost of each shirt = $40 

I have corrected this problem.  Thanks to my fellow tutor.