Mathematics, 16.03.2022 04:00, haileysolis5

Shelly can keypunch 300 cards in 1 hour. When she and Linda work together, they can complete the job in 24 minutes. How long would it take Linda to keypunch 300 cards if she worked alone? (40 min)

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Shelly can keypunch 300 cards in 1 hour. When she and Linda work together, they can complete the job...