Question by Lê Quốc Trần Anh - Discuss with MathYouLike

Lê Quốc Trần Anh Coordinator

16/03/2018 at 11:27

A pencil and 5 paper clips weigh the same as 2 erasers. A pencil weighs the same as 29 paper clips. How many paper clips weigh the same as an eraser?

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Dao Trong Luan Coordinator 16/03/2018 at 11:37

Tell the pencil is a, the paper clips is b and the eraser is c

=> a + 5b = 2c and a = 29b

=> 29b + 5b = 2c

=> 34b = 2c

=> c = 17b

So 17 paper clips weigh the same as an eraser.
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¤« 24/03/2018 at 13:17

Tell the pencil is a, the paper clips is b and the eraser is c

=> a + 5b = 2c and a = 29b

=> 29b + 5b = 2c

=> 34b = 2c

=> c = 17b

So 17 paper clips weigh the same as an eraser.

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