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India improved significantly, ascending to the 39th spot in the World Economic Forum's Travel & Tourism Development Index 2024.
A and B together can complete a piece of work in 10 days. A alone can complete the work in 15 days. How many days will B take to complete the work alone?
A isfive times as efficient as B and can finish a piece of work in 36 days less than B. B can finish this work in how many days?