Question

There were 25 balloons at a party. By the end of the party, n of them half-popped. Using n, write an expression for the number of balloons that were left.

A. n/2
B. 25−n
C. 25+ n/2
D. 25× n/2

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Answer 1

The expression for the number of balloons that were left at the party can be written as 25 - n. Therefore, the correct answer is B. 25 - n.

Step-by-step explanation:

The expression for the number of balloons that were left at the party can be written as 25 - n.

To understand why this expression is correct, think about it this way: there were initially 25 balloons, and out of those, n half-popped.

So, the number of balloons that were left is 25 minus the number of half-popped balloons, which is represented by n.

Therefore, the correct answer is B. 25 - n.