Mastering Equations & Inequalities: Word Problem Challenge

A store sells pencils for $0.50 each. If you buy x pencils, how much will you spend? Write an equation to represent the total cost.

• total cost = x + 0.50

• total cost = 0.50 * x

• total cost = 0.50 / x

• total cost = 0.50 - x

Maria has 3 more than twice the number of books that John has. If John has b books, write an equation to express the number of books Maria has.

• b + 3

• 2b - 3

• 2b + 3

• 3b + 2

A car rental company charges a flat fee of $20 plus $0.15 per mile driven. If you drive m miles, write an equation for the total cost of the rental.

• C = 0.15m - 20

• C = 20 + 0.50m

• C = 20 + 0.15m

• C = 20 - 0.15m

A gardener is planting flowers in rows. If he plants r rows and each row has 5 flowers, write an equation to find the total number of flowers planted.

• total_flowers = r / 5

• total_flowers = r - 5

• total_flowers = r * 5

• total_flowers = 5 + r

Liam has $50. He spends $x on a video game. Write an inequality to represent how much money he has left after the purchase.

• 50 - x >= 0

• x <= 50

• 50 - x < 0

• 50 + x > 0

A recipe requires 2 cups of flour for every 3 cups of sugar. If you use s cups of sugar, write an equation to find the amount of flour needed.

• flour = (2/3) * s

• flour = s - 3

• flour = s + 2

• flour = (3/2) * s

A school is organizing a field trip. Each student pays $15, and there are s students. Write an equation to find the total amount collected for the trip.

• total_amount = 15 - s

• total_amount = 15 * s

• total_amount = s + 15

• total_amount = 15 / s

A bike costs $120. If you save $y each week, write an inequality to determine how many weeks it will take to save enough money to buy the bike.

• w < 120/y

• w <= 120/y

• w = 120/y

• w >= 120/y

A movie theater sells tickets for $10 each. If t tickets are sold, write an equation to find the total revenue generated from ticket sales.

• Revenue = t / 10

• Revenue = 10 + t

• Revenue = 10 * t

• Revenue = 5 * t

A swimming pool can hold 5000 gallons of water. If it is currently filled with w gallons, write an inequality to determine how many more gallons can be added without overflowing.

• x < 5000 + w

• x ≤ 5000 - w

• x ≥ 5000 - w

• x = 5000 - w