Answer: 9 bottles of shampoo left. Why? Let x represent the number of bottles of shampoo that the shop has left. Let f represent the number of bottles of shampoo Felix buys. Let a represent the number of bottles of shampoo Anita buys. This means that x = 30 - (f + a) So, f = (2/5)*30 f = 12 So, a = (3/10)*30 a = 9 Plug it into our equation; x = 30 - (f + a) x = 30 - (12 + 9) x = 30 - 21 x = 9 Therefore, the shop has 9 bottles of shampoo left.
Felix : 2/5 of 30 is 12. Anita : 3/10 of 30 is 9. 12 + 9 = 21. 30-21=9. The shop will have 9 bottles of shampoo left. Bit messy but hope you understand lol <3
A plane can be thought of a sheet of paper with no thickness, and this sheet does not bend or curve. A plane extends infinitely in all directions. Think of a perfectly flat floor that goes on forever.
