A alone can complete a piece of work in 12 days. B alone can complete the same work in 18 days. In how many days will they complete the work together? Choose the correct answer.
Options:
- A: 6 days
- B: $7.2$ days
- C: 8 days
- D: 9 days
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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