Quantitative Aptitude
Out of his monthly income, Mr. Sharma spends 24% on house rent and 70% on household expenses and saves the balance. If every month, he saves βΉ1,200, then what is his monthly income?
In a class of 40 students the ratio of boys to girls is 3 : 5. If the average marks scored by the boys in Science is 70 and the average marks scored by the whole class in Science is 60, then find the average marks scored by the girls in Science.
The sum of the radii of spheres A and B is 14 cm, the radius of A being larger than that of B. The difference between their surface areas is 112 Ο cmΒ². What is the ratio of the volumes of B to A?
Rahul and Rohit start running on a circular track (of length 360 m) from the same point simultaneously with a speed of 3 m/s and 4 m/s. After how much time from the start, they will meet again at the starting point?
Manoj buys 1 kg tomato for βΉ80 and sells it for βΉ90. He also uses a weight of 800 gm in place of 1 kg. What is Manojβs actual profit percentage on the sale of 1 kg tomato?
The ratio of the radius of the base and the perpendicular height of a right circular cone is given as 3 : 4 and the curved surface area of the cone is given as 2310 cmΒ².
Find the radius (in cm) of the base of the given cone. (Use Ο = 22/7.)
