Interest, Percentages, and Proportions

The video tutorial covers various mathematical problems involving percentages. It starts with a car dealership markup problem, followed by a store discount scenario. The next section deals with calculating a salesperson's commission. It then moves on to calculating the balance of a loan with interest. Finally, it discusses matching different situations with their corresponding equations.

If a car dealership buys a car for $835 and marks up the price by 17.4%, what is the retail price?

• $900

• $1000

• $980

• $9829

A store offers a 20% discount on pants, reducing the price to $15.20. What was the original price?

• $18

• $19

• $20

• $21

A salesperson earns a 5.5% commission on a $495 couch sale. How much is the commission?

• $25.50

• $27.23

• $30.00

• $32.50

If a bank charges 3.5% interest on a $7,500 loan, what will the balance be after one year?

• $7,900

• $7,850

• $7,800

• $7,785

A bank charges 5.3% interest on a $7,500 loan. What is the balance after one year?

• $7,850

• $7,897.50

• $8,000

• $7,900

If May slept for X hours and Kieran slept for 1/10th less, what percentage of May's sleep did Kieran get?

• 80%

• 85%

• 90%

• 95%

Kieran practiced piano for X hours, and May practiced two-fifths less. What percentage of Kieran's practice time did May complete?

• 60%

• 70%

• 50%

• 40%

May drank X ounces of juice, and Kieran drank 4/3 more. What is the total percentage of juice Kieran drank compared to May?

• 233%

• 200%

• 150%

• 133%

If Kieran collected X pounds of recycling and May collected 3/10 less, what percentage of Kieran's collection did May achieve?

• 80%

• 70%

• 90%

• 60%

May completed three-fifths more puzzles than Kieran. What is the total percentage of puzzles May completed compared to Kieran?

• 180%

• 160%

• 140%

• 120%