A duck's mass at birth was 0.05 kilogram. The duck gained approximately 0.042 kilogram each week. After how many weeks is the duck's mass 0.890 kilogram?

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asked Mar 5, 2018 11.5k views

5 votes

A duck's mass at birth was 0.05 kilogram. The duck gained approximately 0.042 kilogram each week. After how many weeks is the duck's mass 0.890 kilogram?

Mathematics
middle-school

Krv asked

by Krv

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2 Answers

4 votes

21 weeks, I believe.

Muhamed Shafeeq answered Mar 7, 2018

by Muhamed Shafeeq

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4 votes

0.890-0.05 = .840
.840/ 0.042 = 20
20 weeks

Heels answered Mar 10, 2018

by Heels

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