Step-by-step explanation:
Jane's share = Ghc 450
1/4 * 1800 = 450
New total = 1800- 450 = Ghc 1350.00
John's share;
Total ratio =20
John's ratio= 7
7/20 * 1350 = GHc 472.50
Peter's share
Peter's ratio =5
5/20 *1350 = GHc 337.50
James's share
James's ratio = 8
8/20 *1350 = Ghc 540.00