Question : Rani can do the work in 10 days, Priya can do the same work in 15 days and Guddu can do the same work in 12 days. If they do that work together and they are paid Rs. 9000, then what is the share of Priya?
Option 1: Rs. 2400
Option 2: Rs. 3000
Option 3: Rs. 3500
Option 4: Rs. 3600
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Correct Answer: Rs. 2400
Solution : Given: Rani can do work in 10 days. Priya can do work in 15 days. Guddu can do work in 12 days. LCM of 10, 15, and 12 is 60. Efficiency of Rani $=\frac{60}{10}=6$ Efficiency of Priya $=\frac{60}{15}=4$ Efficiency of Guddu $=\frac{60}{12}=5$ $\therefore$ Share of Priya = $\frac{\text{Efficiency of Priya}}{\text{Sum of efficiencies of all three girls}}\times$ Paid amount = $\frac{4}{15}\times$ 9000 = Rs. 2400 Hence, the correct answer is Rs. 2400.
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Question : A and B together can complete a work in 20 days. B and C together can complete the same work in 15 days. If A, B, and C all work together, then the same work gets completed in 10 days. How many days will A and C together take to complete the same work?
Option 1: 8 days
Option 2: 10 days
Option 3: 15 days
Option 4: 12 days
Question : A can finish a work in 15 days, B can finish the same work in 25 days. They work together for 5 days. The rest of the work is finished by A and C in 4 days. Then C alone can finish the work in:
Option 1: 18 days
Option 2: 24 days
Option 3: 20 days
Option 4: 21 days
Question : A can complete a piece of work in 9 days. B and C can complete the same work in 12 days and 18 days respectively. If A, B, and C work together, then in how many days will they complete the work?
Option 1: 10 days
Option 2: 8 days
Option 3: 4 days
Option 4: 15 days
Question : A can do in one day three times the work done by B in one day. They together finish $\frac{2}{5}$th of the work in 9 days. The number of days by which B can do the work alone is:
Option 1: 90 days
Option 2: 120 days
Option 3: 100 days
Option 4: 30 days
Question : Jason can do a piece of work alone in 23.4 days, while Rafique can do the same piece of work alone in 39 days. In how many days can the duo, complete the same work if they work together?
Option 1: 14.750
Option 2: 14.625
Option 3: 14.875
Option 4: 14.375
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