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Help with maths C2?? ^^

A simple question I know, but I don't understand the answer on the mark scheme (it seems wrong to me)
Given that p=log23 and q=log25, find expressions in terms of p and q for:
a) log245
b) log20.3

Now I can do part a, but the mark scheme says that the answer to part b) is p-q-1
How can this be right?

a) 2p +q
b) log₂3/(5*2) = log₂3 - log₂5 - log₂2
= p-q -1

OP

Thanks -feels stupid- , I understand now ^^

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