Pipe A usually fills a tank in 6 hours. But due to a leak at the bottom of the tank, it takes extra 2 hours to fill the tank. If the tank is full, then how much time will it take to get emptied due to the leak? Optionsa) 16 hoursb) 12 hoursc) 24 hoursd) […]
A boat can go 54 km upstream in 6 hours. If the speed of the stream is 4.8 km/h, then how much time (in hours) will the boat take to cover a distance of 279 km downstream? Optionsa) 18b) 15c) 16d) 20 Solution As per questionBoat can go 54 km upstream in 6 hoursSpeed of
If the ratio of the areas of two similar triangles is 25 : 144, the ratio of their corresponding sides is: Optionsa) 12 : 5b) 5 : 12c) 25 : 12d) 5 : 144 Solution As per questionLet the two triangles be and It is given that ~ By the similarity criterion , if two
Find the area of a square, one of whose diagonals is 4.8 m long. Optionsa) 12.5 m2b) 10.5 m2c) 9.5 m2d) 11.52 m2 Solution As per questionLet the one side of square is aDiagonals (d) = 4.8 mFormula : d = 4.8 = a = Area of square = a2Area of square = Area of
Find the area of a square, one of whose diagonals is 4.8 m long. Read More »
Subject Marks Obtained Total Marks English 73 100 Hindi 56 80 Science 45 75 Mathematic 90 125 IT 45 60 In which subject did he score the highest marks (in %) ? Optionsa) Mathematicb) ITc) Englishd) Hindi Solution As per questionMarks in % = English marks in % = = 73%Hindi marks in % =
Replace * by the smallest digit so that 723 *56* is divisible by 6. Optionsa) 1b) 2c) 3d) 4 Solution As per question723 *56*Divisible by 6 (2 x 3) divisible by both 2 and 3Divisible by 2 = Last digit is evenFrom options : Number may be 2 and 4Divisible by 3 = sum of
Replace * by the smallest digit so that 723 *56* is divisible by 6. Read More »
Simplify Optionsa) 2b) 3c) 5d) 1 Solution Let a = 4.2b = 1.2ab = 5.04Formula :a3 – b3 = (a-b) (a2 +ab + b2) = (a-b)(a-b) = (4.2 – 1.2) = 3 Ans: 3
Simplify (4.2)3 – (1.2)3/(4.2)2 + 5.04 + (1.2)2 Read More »
A class of 30 students appeared in a test. The average score of 12 students is 62, and that of the rest is 74. What is the average score of the class? Optionsa) 67.2b) 68.2c) 69.2d) 70.2 Solution As per questionTotal No. of students appeared in a test = 30Average score of 12 students =
Simplify Optionsa) b) c) d) Solution As per question Answer:
Simplify 4 4/5 x 3/8 + (3 1/2 + 2/3) x 4/5 Read More »
Hour Distance Travelled (in Km) X Distance Travelled (in Km) Y 1St 25 30 2nd 35 45 3rd 25 40 4th 20 30 5th 25 20 6th 20 15 Y’s average speed (km/hour) during the first five hours is: Optionsa) 31b) 34c) 32d) 33 Solution As per questionSum of first five hours speed = 30