List of top General Aptitude Questions on Profit and Loss asked in GATE XE

A business person buys potatoes of two different varieties \(P\) and \(Q\), mixes them in a certain ratio and sells them at ₹ 192 per kg. The cost of the variety \(P\) is ₹ 800 for 5 kg.
The cost of the variety \(Q\) is ₹ 800 for 4 kg.
If the person gets 8% profit, what is the \(P:Q\) ratio (by weight)?

An electricity utility company charges ₹ 7 per kWh (kilo watt-hour). If a 40-watt desk light is left on for 10 hours each night for 180 days, what would be the cost of energy consumption? If the desk light is on for 2 more hours each night for the 180 days, what would be the percentage-increase in the cost of energy consumption?

A business person buys potatoes of two different varieties P and Q, mixes them in a certain ratio and sells them at ₹192 per kg.
The cost of the variety P is ₹800 for 5 kg.
The cost of the variety Q is ₹800 for 4 kg.
If the person gets 8% profit, what is the P : Q ratio (by weight)?

Which one of the given figures P, Q, R and S represents the graph of the following function? \[ f(x)=\left|\,|x+2|-|x-1|\,\right| \]

A ‘frabjous’ number is defined as a 3-digit number with all digits odd, and no two adjacent digits being the same. For example, 137 is a frabjous number, while 133 is not. How many such frabjous numbers exist?

Given below are two statements and four conclusions drawn based on the statements.
Statement 1: Some soaps are clean.
Statement 2: All clean objects are wet.
Conclusion I: Some clean objects are soaps.
Conclusion II: No clean object is a soap.
Conclusion III: Some wet objects are soaps.
Conclusion IV: All wet objects are soaps.
Which one of the following options can be logically inferred?