On her birthday, Meena ate 5 pieces of cakes, each piece having a weight of 5000 centigrams. Find the total amount of cake she ate.
"weight of one piece of cake that Meena ate = 5000 centigram
= 5000 / 100 (100 centigram= 1g) = 50 g
weight of 5 pieces of cake = 50 × 5 + 250 g"