A pen costs twice as much as a pencil. The total cost of 1

Question

pen and 1
pencil is $2.10
. If p
represents the cost of 1
pencil, which equation could you use to find p
?

CLEAR CHECK

2p+p=2.10

p/3=2.10

2p=2.10

p+p=2.10

Answer 1

2p+p=2.10