It's midsummer, which of course means the start of summer. Happy solstice, if you're so inclined.

Well, what can I help you with this week? Just drop me a comment below and I'll do what I can to answer it.

## Colin

Colin is a Weymouth maths tutor, author of several Maths For Dummies books and A-level maths guides. He started Flying Colours Maths in 2008.
He lives with an espresso pot and nothing to prove.