If a jar of peanut butter that is 3 inches in diameter and 4 inches tall sells for $2.00 (assuming it is cylindrical in shape), what is a fair price for a jar that is 6 inches in diameter and 6 inches tall?

## Pre-Algebra

## Cube Made of Bricks

Can a solid cube 1 foot on a side be constructed from bricks measuring 2″ x 4″ x 8″? Show that your answer is correct.

## Half Square Foot, Half Foot Square

What part of ½ square foot is ½ foot square? (Your answer will be some fraction.)

## Fence Enclosing Acres

Two miles of fence will enclose a square of 156.25 acres. How large a square pasture will 4 miles of fence enclose?

## Fireman on a Ladder

A fireman stood on the middle rung of a ladder pouring water on a burning building. As the smoke cleared, he stepped up three rungs. But a sudden flare-up forced him to go down five rungs. He later climbed seven rungs and worked until the fire was out. At that point, he climbed the last six rungs and entered the building. How many rungs were on the ladder?

## Money Giving

Anthony had twice as much money as Russell, but after Anthony gave $35 to Russell, Russell had 3 times as much money as Anthony. How much money did Russell have at the start?

## Backlot Books

Backlot Books sells used books. The store bought Henry’s collection of old Farm and Home magazines for $195.00. They sold the lot for $322.50, and this gave them a profit of 50 cents per magazine. How many magazines did Henry sell them?

## Sophia Sells Jellybeans

Sophia buys jellybeans at 5 for 3 cents, and sells them at 6 for 5 cents. How many must she sell in order to make a profit of $3.50?

## Basketball Team Weight

The average weight of the 5-man freshman basketball team was thought to be 60 kg. However, a mistake was made — one of the weights was written down wrong. Once the mistake was found, and that one weight was changed to the right value of 80 kg, the correct average turned out to be 70 kg. What was the mistaken value? That is, what was written down at first instead of 80 kg?

## Mike’s Age

Mike’s age right now is exactly 3 times his age 3 years hence minus 3 times his age 3 years ago. How old is Mike right now?