A pack of pens costs 3 times as much as a single pen. Together they cost £7.20 How much does a single pen cost?

Question

Can someone please provide me with a clear explanation?

Thank you!

Answer 1

Recall that multiplication can just be thought of as repeated addition. So if a pack of pens costs 3 times the amount of just one pen, that's like saying a pack of pens is the same as buying 3 single pens. So if you buy a pack of pens (cost of 3 single pens) and 1 single pen, it's like you're buying 4 single pens, right?

Now, how much would one pen cost if 4 pens cost £7.20? Try to solve that first, and if you need further help feel free to leave a comment!