how much more is 18p + 17p than 2 * 15p?

3 answers

"how much more" implies subtraction.

How much more is 10 than 6?
answer: 10-6 = 4

So, her we have to do

(18p+17p) - (2*15p)
= 35p - 30p
= 5p
work out 72/6 =
what, you have no calculator?

In any event, 72/6 is a value. Nothing there to "work out". It can, however be simplified by noting that

72/6 = 6*12/6 = ...