Answer:
£55
Step-by-step explanation:
50% is just another way to say 1/2. This means that 1/2 of £110 is £55.
79.65
I used a calculator
Assuming the ':' means an = sign, 2=10 simplifies to 2=8
2/5=x/2250
2250x2=4500
4500/5=900 pounds
18.9