A man increases his speed by $25\%$, and by doing so, he reaches his office $10 \text{ minutes}$ earlier than his usual time. What is his usual time to reach the office?
Options:
- A: $40 \text{ minutes}$
- B: $45 \text{ minutes}$
- C: $50 \text{ minutes}$
- D: $60 \text{ minutes}$
Related Practice Questions:
- A sum of ₹4000 is invested at compound interest for 2 years at a rate of 10% per annum. What will be the total amount at the end of 2 years?
- At what rate of simple interest per annum will a sum of money double itself in 8 years?
- The difference between the compound interest and simple interest on a certain sum of money for 2 years at 5% per annum is ₹25. Find the sum.
- The study of living organism :
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