Aarna cut a cake into two halves and cuts one half into smaller pieces of equal size. Each of the small pieces is twenty grams in weight. If she has seven pieces of the cake in all with her, how heavy was the original cake ?

Options

A. 120 grams
B. 280 grams
C. 140 grams
D. 240 grams

Answer

D

Explanation

According to the question,
Seven pieces of the cake = 6 smaller equal pieces + 1 (one) half cake piece.
Also given, weight of each small piece = 20 g
So, weight of original cake = `[2 xx (20 xx 6)] g = 240 g`.