Let's analyze the given sentence to identify the error.
The sentence is: "If he would have taken rest, as advised by the doctor, he might not have had a second heart attack."
We need to determine if there's grammatical inconsistency within this sentence structure.
Therefore, the part containing the error is: "If he would have taken rest/"
Hence, the correct answer is the first part of the sentence.
If the price of a commodity increases by 25%, by what percentage should the consumption be reduced to keep the expenditure the same?
A shopkeeper marks his goods 40% above cost price and offers a 10% discount. What is his percentage profit?