a) They invite 15 friends, but 4 could not come.
How many of their friends came to the picnic?
b) The Harper family brought 5 bottles of juice, 2 bottles of coke, and 3 bottles of lemonade.
Their friends brought 6 bottles of juice.
How many bottles of drink are there altogether?
c) There were 45 pieces of chicken.
The Harpers ate 12 and their friends ate 16.
How many pieces of chicken were left?
