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Amit and Sujit together can complete an assignment of data entry in 5 days. Sujit’s speed is 80 % of Amit’s speed and the total key depressions in the assignment are 5,76,000. What is Amit’s speed in key depressions per hour if they work for 8 hours a day ?
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Explanation:
Let Amit’s speed be x key depressions per day.
Sujit’s speed = 4x\5 key depressions per day
∴ 5x + 5 ×4x\5 = 576000
=> 9x = 576000
=> x = 576000\9 = 64000
∴ Amit’s speed per hour
= 64000\8 = 8000