goods exported                 90
services  ''                           35
balance of visible trade                       40
gifts and transfers from country A     7
calculate current account balance?

Dear Student, 

Current account balance = Visible Trade Balance + Invisible trade balance + Net Unilateral Transfers 
= 40 + 35 + 7 
= 82
(Goods exported should be ignored as balance of visible trade is given)

Regards.