Answer:
£11
Explanation:
first lets find the number of children's = 3/8 * 1120 =420 children's
then find number of adults = 1120 -420 = 700 adults
if adult costs, £28
28 * 700 = £19600
lets subtract the total cost - total adult ticket cost
= £24,220 - £19600
= £4620......this is the total children's ticket cost
there are 420 children ---> £4620
1 children --> £4620/420 = £11