Aila can complete an assignment in 5 days and Baba can complete the same assignment in 20 days. If they work together, how many days will they take to complete the assignment?

🧠 Explanation:

Aila takes 5 days and Baba takes 20 days to complete an assignment alone. Together, they take 4 days. To find this, calculate their work rates: Aila does 1/5 and Baba does 1/20 per day. Combined, they do 1/5 + 1/20 = 1/4 work per day, so it takes 4 days. This teaches teamwork efficiency and rate calculations, useful in math and project planning.