Question
If the surface areas of two spheres are in the ratio of
4 : 25, then find the ratio of their volumes.Solution
The correct answer is C
Average age of a class of 28 students is 10 years. Average age of the class is increased by 12 months if the age of the teacher is included. Find...
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...
The average age of three children is 14 years. If their ages are in the ratio 1:2:3. Find the age of the youngest child.
A candidate just passed by getting 60 answers correct by attempting 132 of the total questions. Find the total number of questions in the examination if...
The total number of students in class A and B is 72. The number of students in A is 40% more than that in B. The average marks of students in B are 50% ...
If a:b:c = 3:4:6, and (5a + 3c) = 132, then find the value of '3b'.
The average of 27 numbers is 20.The average of first 13 numbers is 15 and that of the last 13 numbers is 18. What will be the 27th number?
- The average salary of X, Y, and Z is Rs. 22000 and the average salary of P and Q is Rs. 15000. If the savings of X is 60% of the average salary of all five...
The average weight of 14 persons increases by 3.5 kg when a new person comes in place of one of them weighing 48 kg. The weight of the new person is.
- Three numbers are given such that when the average of any two numbers is added to the third number, the resulting sums are 250, 240, and 230. Determine the...
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