Question

A group of 5 teachers bought 3 pens and 1 eraser each. Their total cost for all the materials was $12.89. If the eraser was $0.97, how much was each pen?

Variable:________________

Equation:________________

Solution:________________

Answer 1

• $0.536

Explanation:

Variable:

• p for pen

Equation:

• 5(3p + 0.97) = 12.89

Solution:

• 5(3p + 0.97) = 12.89
• 15p + 4.85 = 12.89
• 15p = 12.89 - 4.85
• 15p = 8.04
• p = 8.04 / 15
• p = 0.536