hello all.
I have a problem with this question:
1 pencil and 1 pen cost $8 together.
2 pencils and 3 pens cost $21 together.
What the cost of 1 pencil and 1 pen?
I know that the answer is $3 for a pencil and $5 for a pen, but i don't know what equation to use.
I appreciate any help on this.
thanks.
I have a problem with this question:
1 pencil and 1 pen cost $8 together.
2 pencils and 3 pens cost $21 together.
What the cost of 1 pencil and 1 pen?
I know that the answer is $3 for a pencil and $5 for a pen, but i don't know what equation to use.
I appreciate any help on this.
thanks.