Answer: B) 5 m/h Explanation: As the distance travelled is constant, the time taken is inversely proportional to speed. Let 'u' be the speed of the current and 'v' be the speed of the boat. Speed of the boat downstream = v + u & upstream = v - u => v+u/v-u = 30/20 => v/u = 5 => v = 5u => v + u = 6u = 10/20/60 miles/hr => 6u = 30 m/h => u = 5 m/h

Answer: B) 30 kmph Explanation: Let the speed of the faster train be 'S' kmph   Then speed of the slower train will be '(S-5)' kmph   Time taken by faster train = 350/S hrs   Time taken by slower train = 350/(S-5) hrs  350s-5 - 350s = 2 hrs 20 min = 213 = 73   => S = 30 km/hr.

Answer: B) 222.5 degrees Explanation: Apply the formula for finding the angle:Angle=(30h-(11/2)m( where m stands for minutes and h stands for hours)Hence, 30x11 - 11/2x35 = 330 - 192.5 = 137.5 degreesThe reflex angle = 360 - 192.5 degree = 222.5 degrees.

Answer: B) 16 Explanation: Let the third proportion to 9 & 12 be 'x'. => 9:12 = 12 :p => p = 12x12/9 = 16.

Answer: D) Karnataka Explanation: Kunchikal falls of India is of height 1493 ft is in Karnataka state of the river Varahi.

Answer: D) Apiculture Explanation: Breeding and management of bees is called Apiculture.   A beekeeper or apiarist keeps bees in order to collect their honey and other products that the hive produces (including beeswax, propolis, flower pollen, bee pollen, and royal jelly), to pollinate crops, or to produce bees for sale to other beekeepers. A location where bees are kept is called an 'apiary' or 'bee yard.'

Answer: B) very detailed reports Explanation: Managerial accounting is the process of identifying, measuring, analyzing, interpreting and communicating information for the pursuit of an organization's goals. This branch of accounting is also known as cost accounting.   Hence, the distinguishing feature of managerial accounting is very detailed reports.

Answer: D) 2 Explanation: