Percentage and Measurement Problems

This video tutorial covers various mathematical problems, including percentage increase and decrease, population changes, distance calculations, and circle area approximation. It provides step-by-step solutions and explanations for each problem, helping students understand the concepts and calculations involved. The video concludes with a call to action for viewers to support the channel.

If a bakery used 240 kg of butter last month and increased its usage by 25% this month, how much butter did it use this month?

• 260 kg

• 320 kg

• 300 kg

• 280 kg

The price of oranges was $1.75 per pound last week. If the price decreased by 20%, what is the new price per pound?

• $1.50

• $1.40

• $1.35

• $1.45

A herd of bison had a 10% increase in population from 550 bison last year. How many bison are there this year?

• 615

• 600

• 605

• 595

If a herd of bison decreased by 10% to 550 bison this year, how many bison were there last year?

• 605

• 625

• 600

• 615

Elena walked 12 miles and then a quarter of that distance. How far did she walk in total?

• 16 miles

• 13 miles

• 14 miles

• 15 miles

What is a quarter of 12 miles?

• 2 miles

• 5 miles

• 4 miles

• 3 miles

If the circumference of a circle is 600 meters, what is an approximate value for its diameter?

• 210 meters

• 180 meters

• 200 meters

• 191.08 meters

Using the diameter, what is an approximate area of the circle with a circumference of 600 meters?

• 30,000 square meters

• 27,000 square meters

• 25,000 square meters

• 28,662 square meters

What does the number 3 represent in the equation d = 3t, where d is distance in inches and t is time in minutes?

• Time taken

• Speed of the snail

• Constant of variation

• Distance from the rock

How far will the snail be from the rock after 9 minutes if it moves at 3 inches per minute?

• 27 inches

• 33 inches

• 30 inches

• 24 inches