Between them Catrin, Amie and Kate have 18 bottles of nail varnish. Amie has twice as many as Catrin, and Kate has three times as many as Catrin.

Question

How many does Catrin have?

Answer 1

Let's call the number of nail varnish bottles Catrin has as C.

Amie has twice as many as Catrin, so Amie has 2C.

Kate has three times as many as Catrin, so Kate has 3C.

Together, they have C + 2C + 3C = 6C bottles of nail varnish.

We know that the total number of bottles is 18, so we can write the equation 6C = 18.

Dividing both sides of the equation by 6, we get C = 18/6 = <<18/6=3>>3.

Therefore, Catrin has 3 bottles of nail varnish. Answer: \boxed{3}.