Practice Word Problem Example (5.1) - Chapter: Linear Equations - CBSE Class 9 Maths
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Word Problem Example

Practice - Word Problem Example

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Practice Questions

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Question 1 Easy

If a bus charges a fixed fee of $3 plus $1.50 for each kilometer, what is the equation for calculating the total cost?

💡 Hint: Identify the fixed and variable costs.

Question 2 Easy

A pizza shop charges $10 for delivery plus $2 per pizza. Write the formula for the total cost of 'p' pizzas.

💡 Hint: Look for both the base cost and the per-pizza charge.

4 more questions available

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Quick quizzes to reinforce your learning

Question 1

What is the equation for calculating the cost of a taxi ride that charges $5 for base fare and $2 per km?

C = 2x + 5
C = 5 + 2x
Both of the above

💡 Hint: Think about the order of addition.

Question 2

True or False: The cost function can change based on the distance traveled.

True
False

💡 Hint: If you think of fixed and variable costs, which part changes?

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Challenge Problems

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Challenge 1 Hard

A car rental service charges $50 per day plus an additional $0.25 per mile driven. Write the equation for calculating the total cost for renting a car for 'd' days and driving 'm' miles. Then find the cost of renting for 3 days and driving 100 miles.

💡 Hint: Break down what each component of the cost equation represents.

Challenge 2 Hard

A subscription service charges $30 per month plus $5 for each additional channel. If a customer wants 'c' extra channels, determine the cost. Calculate for 6 additional channels.

💡 Hint: Identify both base and additional costs in the scenario.

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