Question

A Beetle's basket contains $20$ fruits in total which includes bananas, apples and oranges. If there are $10$ bananas and $5$ apples, how many oranges are there in the basket?

• A. $10$
• B. $15$
• C. $5$
• D. $20$

Answer 1

The correct option is C $5$

$\underset{–}{Concept:}$

Total number of fruits = Number of bananas + Number of apples + Number of oranges.

$\underset{–}{Method:}$

Given: Total number of fruits = $20$
Number of bananas = $10$
Number of apples = $5$

Let the number of oranges = $x$ (a random variable)
Any letter can be used as a variable but $x$ is most frequently used variable.

Then, according to the given condition

$10+5+x=20$
$15+x=20$

On subtracting '$15$' from both sides of the equation, we get
$15+x-15=20-15$
$x=5$

Beetle's basket has $5$ oranges available in it.