A pen and a pencil together cost $1.10. The pen costs a dollar more than the pencil. How much does the pen cost?
If they both cost 1.10 then add 1.00 two the 1.10 to get the answer of
Okay the pen costs a dollar more than the pencil so they would both be five cents the encil is 5 cents.
what about the pen?
You should solve it algebraically as follows:
Let the cost of the pencil = P, then:
The cost of the pen =P + 1. So, we have:
P + P + 1 =$1.10
2P + 1 =$1.10 Subtract 1 from both sides
2P =$0.10 Divide both sides by 2
P =$0.10 / 2
P = $0.05 cents - the cost of the pencil
$1 + $0.05 =$1.05 - cost of the pen.
yes you can but you still can do it this questions dosen't require much though LOL but yes it is good to keep habit.
True does not require that much but at least she proves her math and gives a detailed expination of her math. Its detailed so it could help someone through the process if wanting to solve this problem.