• 71
• 81
• 61
• 85

• 36 min
• 42 min
• 48 min
• 44 min
• #### 3.  It takes the same time of 66 days for 12 men to finish the same work as it takes for 24 boys. If we assign this work to 20 men and 10 boys, in how many days will they be able to finish this work?

• $$39\frac{3}{5}$$
• $$31\frac{{17}}{{25}}$$
• $$55\frac{3}{9}$$
• $$66\frac{3}{7}$$

• 360
• 300
• 600
• 900

• 12 minutes
• 24 minutes
• 36 minutes
• 42 minutes

• Rs. 280
• Rs. 300
• Rs. 325
• Rs. 250

• 2400
• 1800
• 9000
• 7200

• 5
• 6
• 7
• 8

• 80
• 90
• 75
• 100

• 10
• 12
• 15
• 30

• 20 min
• 30 min
• 40 min
• 45 min

• 36
• 6
• 18
• 12

• 110 minutes
• 115 minutes
• 120 minutes
• 121 minutes
• #### 14.  Two pipes, P and Q can fill a cistern in 12 and 15 minutes respectively. If both are opened together and at the end of 3 minutes from starting, P is closed, how much longer will the cistern take to fill?

• 5 minutes
• $$8\frac{1}{2}\ minutes$$
• $$8\frac{1}{4}\ minutes$$
• $$8\frac{3}{4}\ minutes$$

• 3400
• 3600
• 2550
• 2750

• Rs. 1000
• Rs. 600
• Rs. 750
• Rs. 500

• 24
• 44
• 33
• 20

• 12
• 24
• 36
• 30

• 10
• 20
• 15
• 18

• 6
• 12
• 9
• 15

• 60
• 70
• 85
• 75

• 12
• 10
• 4
• 9

• 16
• 24
• 32
• 38

• 12 days
• 20 days
• 15 days
• 18 days

• 12 days
• 72 days
• 42 days
• 36 days
• #### 26.  A cistern has two pipes. One can fill it with water in 16 hours and the other can empty it in 10 hours. In how many hours will the cistern be emptied if both the pipes are opened together with half of the cistern full of water?

• $$3\frac{1}{3}$$ hours
• 2hours
• 10 hours
• $$13\frac{1}{3}$$ hours

• 1500
• 2000
• 3000
• 2500

• 3 hours
• 4 hours
• 10 hours
• 12 hours

• 54
• 45
• 21
• 27

• 7 3/8 days
• 8 4/5 days
• 9 3/8 days
• 10 days
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