A pen costs twice as much as a pencil. The total cost of 1 pen and 1 pencil is $2.10. If p represents the cost of 1 pencil, which equation could you use to find p?

Question

Mathematics

Landon Pennington

12 April, 21:28

A pen costs twice as much as a pencil. The total cost of 1 pen and 1 pencil is $2.10. If p represents the cost of 1 pencil, which equation could you use to find p?

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Answers (1)

Know the Answer?

Rocco Merritt · Answer 1

3p = $2.10

p = $0.70

Step-by-step explanation:

Cost of a pencil: p

Cost of a pen: p * 2 = 2p

If the cost of 1 pen and 1 pencil is $2.10,

2p + 1p = $2.10

3p = $2.10

p = $0.70