Aruna cut a cake into two halves and cut 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?

120 grams

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140 grams

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240 grams

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280 grams

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Solution

The correct option is C 240 grams
Seven pieces of cakes means one half cake and six pieces of another half cake
Total weight of 6 small pieces =6 x 20 g=120g
∴ Weight of the half cake=120 g
Total weight of the cake=240 g.

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A cake is cut into two equal parts and each part is again cut into two equal halves and it continues in that way. How many times should one cut the cake so that the number of pieces will be 32? [3 MARKS]

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Aruna cut a cake into two halves and cut 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?

The correct option is C 240 gramsSeven pieces of cakes means one half cake and six pieces of another half cake Total weight of 6 small pieces =6 x 20 g=120g∴∴ Weight of the half cake=120 g Total weight of the cake=240 g.

The correct option is C 240 grams
Seven pieces of cakes means one half cake and six pieces of another half cake
Total weight of 6 small pieces =6 x 20 g=120g
∴ Weight of the half cake=120 g
Total weight of the cake=240 g.