Work, Rate, and Time

[mq] Work & Rate: Level 5 1. A can complete a job in 12 days. B is 60% more efficient than A. How many days does B take? 6 7.5 8 7.2 5 Check Solution (B): Rate A = \(1/12\). Rate B = \(1.6 \times (1/12) = \frac{16}{120} = \frac{2}{15}\). Time B = \(15/2 =…

[mq] Work & Rate: Level 4 1. A can do a job in 20 days. B can do it in 30 days. They work together for 6 days, then A leaves. How many days will B take to finish the remaining work? 10 12 15 18 20 Check Solution (C): Combined Rate = \( \frac{1}{20}…

[mq] Work & Rate: Level 3 1. Tom can do a job in 6 hours, Jerry in 8 hours, and Spike in 12 hours. How long will it take if they all work together? 2 hours 2.66 hours 3 hours 4 hours 2.4 hours Check Solution (B): Combined Rate = \( \frac{1}{6} + \frac{1}{8} +…

[mq] Work & Rate: Level 2 1. Machine A can complete a job in 10 hours. Machine B can complete the same job in 15 hours. How long will it take if they work together? 5 hours 12.5 hours 6 hours 8 hours 7.5 hours Check Solution (C): Rate A = 1/10, Rate B =…

[mq] Work & Rate: Level 1 1. If a machine can produce 120 widgets in 4 hours, what is its rate of production per hour? 20 25 30 40 48 Check Solution (C): \( Rate = \frac{Work}{Time} = \frac{120}{4} = 30 \) widgets/hour. 2. John can paint a room in 5 hours. What fraction of…