Resources and Their Usage
Senior 3 · Entrepreneurship
Resources and Their Usage
Lesson 1 of 4
20 min
Uwineza runs Umurava Juice, a small business in Rubavu that sells bottled passion-fruit juice to shops and hotels. Every Monday she writes the same list before work starts:
Every item on that list is a resource. Some you can touch, like fruit and bottles. Some you cannot, like her recipe, her customers’ trust and her time. This lesson asks what all of them have in common, and why an entrepreneur has to treat every one of them as limited.
Umurava Juice, its people and all its figures in this unit are illustrative.

Definition
Resource: anything, material or non-material, that people, businesses or a country use to satisfy needs and wants or to produce goods and services.
Example: passion fruit, a fridge, a helper’s labour, a bank loan, a recipe and a working day are all resources of Umurava Juice.
Definition
Input: a resource that goes into production. Output: a good or service that comes out of production. Production is the process that turns inputs into outputs that people value more than the inputs alone.
Example: fruit, sugar, bottles, electricity and labour are Umurava Juice’s inputs; bottled juice on a hotel shelf is its output.
The diagram shows Umurava Juice as a simple system. Resources go in on the left, production changes them, and goods come out on the right. When customers pay, the money buys the next round of inputs, so the cycle can repeat. A business that wastes its inputs, or sells its output for less than the inputs cost, cannot keep this cycle turning for long.
Notice the by-product: the peels left after the juice is squeezed. They are waste to Uwineza, but a pig farmer or a compost maker nearby can use them as an input. Whether a thing is a resource depends on whether someone has the knowledge and the means to use it.
Resources are very different from each other, yet they share eight features. Learn each one with an example.
Tip
Exam technique. For “State and explain the characteristics of resources”, write each characteristic as a short heading, one sentence of meaning and one example from a named business. A list of eight bare words earns far fewer marks than four explained points.
Worked example 1: which resource limits output?
This week Uwineza has: 90 kg of fruit, and each kilogram fills 2.5 bottles; 250 empty bottles; a fridge that can chill 60 bottles a day, and she bottles on 3 days; two helpers who each fill 8 bottles an hour and work 4 hours a day on those 3 days. How many bottles can she sell, and which resource sets the limit?
Step 1: work out what each resource allows on its own.
| Resource | Working | Bottles it allows |
|---|---|---|
| Fruit | 225 | |
| Empty bottles | given | 250 |
| Fridge | 180 | |
| Labour | 192 |
Step 2: the output is the smallest of these, because every bottle needs all four resources: bottles.
Step 3: interpret. The fridge is the limiting resource. Buying more fruit or more bottles this week would only leave stock unused.
Worked example 2: adding one resource
Uwineza borrows money for a second, identical fridge. By how much does her weekly output rise?
Step 1: the fridges now allow bottles.
Step 2: the new limit is the next smallest figure: bottles, set by labour.
Step 3: output rises by bottles only. Because resources are complementary, adding more of one helps only until another one runs short. Before borrowing, she should have checked which resource would limit her next.
Warning
Common mistakes. (1) Treating money as the only resource. Money buys resources, but time, skills, information and customers’ trust are resources too. (2) Confusing a resource with a product: bottled juice is Uwineza’s output, although it is an input for the hotel that serves it. (3) Writing that renewable resources “can never run out”: a forest cut faster than it regrows disappears.
Scarcity and Opportunity Cost | Economics Explained, from the Federal Reserve Bank of St. Louis (about 4 minutes). Watch for why limited resources force every person and business to choose, and what each choice gives up.
Practice
Sources and credits
Written by Ganzaa: the Umurava Juice case, the system diagram, the worked examples and the practice items. The businesses, names and figures are illustrative (2026).
This lesson adapts CC BY-SA material and is shared under CC BY-SA 4.0.