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Pipe A can fill a tank in 16 minutes and pipe B cam empty it in 24 minutes. If both the pipes are opened together after how many minutes should pipe B be closed, so that the tank is filled in 30 minutes?
A. 20
B. 24
C. 23
D. None of these
Pipes and Cisterns · Easy · 4 weeks ago
Sarfaraz obtained 76, 65, 82, 67 and 85 marks (out of 100) in English, Mathematics, Physics, Chemistry and Biology. What are his average marks?
A. 65
B. 69
C. 72
D. None of these
Arithmetic Mcqs · Easy · 4 weeks ago
If the area of circle is 616 sq cm then its circumference?
A. 78 m
B. 88 m
C. 75 m
D. 70 m
Areas · Easy · 4 weeks ago
The radius of the base of cone is 3 cm and height is 4 cm. Find the volume of the cone?
A. 12 π cm3
B. 6 π cm3
C. 8 π cm3
D. 10 π cm3
Volumes · Easy · 4 weeks ago
A person crosses a 600 m long street in 5 minutes. What is his speed in km per hour?
A. 8.2
B. 4.2
C. 6.1
D. 7.2
Time & Distance Mcqs · Easy · 4 weeks ago
Out of an earning of Rs. 720 Ram spends 65 %. How much does he save?
A. Rs. 350
B. Rs. 390
C. Rs. 252
D. Rs. 316
Percentage Mcqs · Easy · 4 weeks ago
Aleem buys 4 horses and 9 cows for Rs. 13,400. If he sells the horses at 10% profit and the cows at 20% profit, then he earns a total profit of Rs. 1880. The cost of a horse is:_________?
A. Rs. 1000
B. Rs. 2000
C. Rs. 2500
D. Rs. 3000
Profit and Loss Mcqs · Easy · 4 weeks ago
Two pipes can fill a tank in 18 minutes and 15 minutes. An outlet pipe can empty the tank in 45 minutes. If all the pipes are opened when the tank is empty, then how many minutes will it take to fill the tank?
A. 12
B. 13
C. 11
D. 10
Pipes and Cisterns · Easy · 4 weeks ago
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