Help with an exam question

Hi Guys,
Could someone help me with this question please.
A
"You buy 10 million EURUSD @ 1.1126 and then buy another 20 million @ 1.1159.

Calculate your total position and your average entry price...."

B
then you sell 18 million @ 1.1147 what is your remaining position and have you realised a profit or a loss on the trade ?

C
if EURUSD is now trading at 1.1152 calculate your unrealised profit or loss in pip...


Could someone explane to me how to calculate this please and any relative websites that might help me aswell..

Thanks in advance:smart:

Help with an exam question