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A graprfruit has a mass of 100 grams, a watermelon has a mass 4 times the mass of the grapefruit. What ia the mass of the watermelon in centigrams?
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A graprfruit has a mass of 100 grams, a watermelon has a mass 4 times the mass of the grapefruit. What ia the mass of the watermelon in centigrams?

User Shannon Holsinger
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The grapefruit weighs 100g
If the watermelon weights 4 times this, we multiply by 4
100g x 4 = 400g
Watermelon = 400g
A centigram is 100th of a gram
Therefore to work out how many centigrams it is, we multiply by 100
400 x 100 = 40,000 cg
User Nate B
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