Mike ordered 150 pens and 150 pencils to sell for a theatre club fundraiser. The pens cost 11 cents more than the pencils. If Mike's order cost $31.50, find the cost of each pen and pencil.

Question

I need to solve the problem arithmetically and algebraically.

Answer 1

p represents the cost of pencils

p + 0.11 represents the cost of pens

150p + 150(p + 0.11) = 31.50

Can you solve for p and answer?