This is a classic "break-even" problem that tests your ability to set up inequalities and work with algebraic expressions systematically.
Let me walk you through the core logic you need to master here.
Understanding What We're Really AskingYou need to determine: Does \($16.50 > $0.95p\)?
The basket has a fixed cost of \($16.50\), while buying individually costs \($0.95 \times p\). So we're looking for the "break-even" point where these costs are equal.
Analyzing Statement 1: \(p < 20\)Here's where you need to test boundary values. Let's think about this systematically:
If \(p = 10\): Individual cost = \(10 \times $0.95 = $9.50\)
Since \($9.50 < $16.50\), the basket costs MORE.
If \(p = 19\): Individual cost = \(19 \times $0.95 = $18.05\)
Since \($18.05 > $16.50\), the basket costs LESS.
Notice how we get different answers depending on the value of p? This means Statement 1 is insufficient.
Analyzing Statement 2: \((p + 4)\) pounds costs \($18.05\)This is the key insight you need to see! If \((p + 4)\) pounds costs \($18.05\), then those extra 4 pounds cost \(4 \times $0.95 = $3.80\).
Therefore: \(p\) pounds costs \($18.05 - $3.80 = $14.25\)
Now we can definitively compare:
- Basket: \($16.50\)
- Individual: \($14.25\)
Since \($16.50 > $14.25\), the answer is YES - the basket costs more.
Answer: BThe complete systematic approach for identifying break-even problems and the 3 alternative solution methods that save time on similar DS questions are covered in detail
here on Neuron. You can also practice with comprehensive solutions for
many other similar official questions to build your pattern recognition for Data Sufficiency problems.