Final answer:
To ensure each guest can have 110g of cheese, Andrea should buy at least 14 blocks of cheese.
Step-by-step explanation:
To calculate the number of blocks of cheese Andrea should buy, we need to divide the total amount of cheese needed by the amount of cheese in each block.
The total amount of cheese needed can be found by multiplying the number of people coming to the party (62) by the amount of cheese per person (110g).
So, the total amount of cheese needed is 62 * 110g = 6820g.
Since each block of cheese is 500g, Andrea should buy at least 14 blocks of cheese (6820g / 500g).