# GrayMatter Software Services Interview Questions

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###### There are two pipes which are functioning simultaneouly to fill a tank in 12 hours, if one pipe fills the tank 10 hours faster than other then how many hours second pipe will take to fill the tank ? A. 10 hours B. 20 hours C. 30 hours D. 40 hours
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###### The proportion of copper and zinc in the brass is 13 : 7. How much zinc will there be in 100 kg of brass? A. 15kg B. 25kg C. 35kg D. 45kg
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###### A 6% stock yields 8% . The market value of the stock is : A. Rs.38 B. Rs.48 C. Rs.58 D. Rs.68
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###### akshi invests a part of Rs. 12,000 in 12% stock at Rs. 120 and the remainder in 15% stock at Rs. 125. If his total dividend per annum is Rs. 1360, how much does he invest in 12% stock at Rs. 120? A. Rs. 4000 B. Rs. 5000 C. Rs. 6000 D. Rs. 8000
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