Quantitative aptitude

Question The number of coins of radius 0.75 cm and thickness 0.2 cm to be melted to make a right circular cylinder of height 8 cm and base radius 3 cm is Type multiple_choice Option 640 correct Option 460 incorrect Option 500 incorrect Option 600 incorrect Solution

Question If the areas of the three adjacent faces of a cuboidal box are 120cm2, 72cm2 and 60cm2 respectively, find the volume of the box. Type multiple_choice Option 7200 cm3 incorrect Option 720 cm3 correct Option 864 cm3 incorrect Option (72)2 cm3 incorrect Solution

Question A circular wire of radius 21cm is cut and bent to form in the form of a rectangle whose sides are in the ratio of 6:5. Assuming, Π = 22/7, the area enclosed by the rectangle is Type multiple_choice Option 540 cm2 incorrect Option 1080 cm2 correct Option 2160 cm2 incorrect Option 4320 cm2

Question A takes twice as much time as B or thrice as much time as C to finish a piece of work; working together they can finish the work in 2 days. B can do the work alone in Type multiple_choice Option 12 days incorrect Option 4 days incorrect Option 8 days incorrect Option 6

Question A and B can finish a piece of work in 30 days, B and C can finish it in 15 days, C and A in 10 days. Time taken by them together to do this work is? Type multiple_choice Option 5 days incorrect Option 2(1/2) days incorrect Option 7(1/2) days incorrect Option 10 days

Question A cistern is normally filled with water in 10 hours but takes 5 hours longer to fill because of a leak in its bottom. If the cistern is full, the leak will empty the cistern in Type multiple_choice Option 20 hours incorrect Option 40 hours incorrect Option 50 hours incorrect Option 30 hours correct

Question The ratio of market prices of wheat and paddy is 2:3 and the ratio of quantities consumed in a family is 5:4. Find the ratio of expenditure of wheat and paddy. Type multiple_choice Option 6:5 incorrect Option 5:6 correct Option 1:1 incorrect Option 8:15 incorrect Solution

Question The ratio of numbers of girls and boys participating in sports of a school is 4:5. If the number of girls is 212, determine the number of boys participating in the sports. Type multiple_choice Option 256 incorrect Option 265 correct Option 251 incorrect Option 263 incorrect Solution

Question The three numbers are in the ratio 1/2 : 2/3 : 3/4. The difference between greatest and smallest numbers is 36. Find the numbers. Type multiple_choice Option 72, 84, 108 correct Option 60, 72, 96 incorrect Option 72, 84, 96 incorrect Option 72, 96, 108 incorrect Solution

Question If A:B = 2:3, B:C = 4:5 and C:D = 6:7, then A:B:C:D is Type multiple_choice Option 18:24:30:35 incorrect Option 16:24:30:35 correct Option 16:22:30:35 incorrect Option 16:24:15:35 incorrect Solution