4. £54 inheritance money is split between Abi, Babs and Caz in the ratio 1:3:2
Abi gives 80% of her money to charity.
Babs gives 0.25 of her money to the same charity.
Caz also gives of her money to the charity.
How much money in total do the girls donate to charity?
Express the amount of money they give to charity as a percentage of
inherited amount to 1 decimal place.