Problem description:
There are some apples and pears. If a bag contains five apples and three pears, and then four apples, if a bag contains seven apples and three pears, and there are more apples 12 pears, how many apples and pears are there?
Analysis:
12 pears are equivalent to 12 ÷ 3× 7 = 28 apples.
The difference is 28+4 = 32 apples.
The number of bags is 32÷ (7-5) = 16 bags.
The total is 16× (5+3)+4 = 132.