Percentage and Algebra Word Problems

The video tutorial covers solving various algebraic problems by setting up equations. It includes examples on calculating profit, solving simple equations, using substitution, finding consecutive integers, solving age-related problems, and calculating original prices after a percentage decrease.

What is the formula for profit if it increases by 20 each day?

• Profit = 20d

• Profit = 10d

• Profit = 40d

• Profit = 30d

If the profit on day 10 is calculated using the formula, what is the profit?

• 200

• 150

• 100

• 250

What is the value of x if 7 times a number equals 35?

• 6

• 5

• 3

• 4

If one number is 25 more than twice another number, what is the first number if the second is 15?

• 45

• 50

• 55

• 60

What is the sum of two consecutive integers if the first integer is 17?

• 33

• 34

• 35

• 36

How old is Peter if he is three times as old as he was six years ago?

• 6

• 9

• 12

• 15

What was the price of the MP3 player last year if it decreased by 20% to $120 this year?

• $150

• $120

• $100

• $180

If the price of an item decreases by 20%, what percentage of the original price remains?

• 90%

• 80%

• 70%

• 60%

What is the result of dividing 120 by 0.8?

• 150

• 120

• 140

• 100

If the price of an item is reduced by 20% and the new price is $120, what was the amount of reduction?

• $30

• $50

• $20

• $40