In the given sentence, we need to identify if there is any grammatical error in the underlined part. The sentence provided is: "Tropical forests \(\underline{\text{play a key role as the world’s}}\) carbon and wildlife reservoirs."
Identify the part of the sentence that contains an error:
"Neither the manager nor the employees ___ willing to accept the new policy."
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?