Rumi and Rony can finish a task, working together, in 12 days. If Rony alone can finish that in 20 days, how many days will Rumi need to finish the task working alone ?
Created: 9 months ago | Updated: 3 months ago
Job Solution Dutch-Bangla Bank Ltd Dutch-Bangla Bank Ltd - Management Trainee Officer - 09.10.2009 গণিত
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