Question
A sphere is cut into hemisphere. One of them is used as
bowl. It takes 8 bowlfuls of this to fill a conical vessel of height 12cm and radius 6cm. Then find the radius of Sphere.Solution
There are two sections A and B of a class, consisting of 38 and 42 students, respectively. If the average weight of the students of section A is 55 kg a...
The average weight of (n + 1) girls is 50 kg, and the average weight of (n - 3) boys is 70 kg. If the overall average weight is 62 kg, how many boys are...
In an examination the average marks of Rohit is 54. If he got 18 more marks in science and 22 more marks in maths then his average would have been 58. F...
- The average marks of Karan in 5 different papers was calculated as 73. But it was later found that his marks in two subjects were wrongly entered as 80 and...
How many identical spherical marbles having a diameter of 4 cm can be made by melting a hemisphere of radius 28 cm? (Use Ο = 22/...
Average run scored by a batsman in first βxβ matches is 20. In next 5 matches he scored runs with an average of 60 so that his overall average incre...
The average weight of 15 boys in a group is 48 kg. If the collective weight of 12 girls in another group is 25% lower than that of the boys, what is the...
The ratio of the present ages of P and Q is 7:4 respectively. If the age of P 13 years hence from now will be 125% more than the age of Q 4 years ago fr...
What is the average of the squares of the first 29 natural numbers?
- Three varieties of pulses priced at Rs. 28/kg, Rs. 32/kg, and Rs. βxβ/kg are mixed in the ratio 4:3:5. If the final mixture is worth Rs. 33 per kg, the...
Relevant for Exams:
