Question
The Average weight of 12 students in the class is 38
kg, when 4 new students included, the average weight becomes 39.5 kg and the weight of those 4 students was 46, 52, 36 and 42 kg. Find the total number of students in the class?Solution
Average weight of new students = (46+52+36+42)/4 = 44 3 units = 12 students Total = 12 + 4 = 16 students
In a class of 40 students, Monika is 13th from the left and Rakesh is 32th from the right end. How many students are there between...
Certain number of boxes are in a stack, such that the box, which is at the bottom, is numbered as 1, the box above it as 2 and so on. Box W is 14t...
All 140 students in a class are standing in a row facing towards the north direction. Aryan is 33 rd from the right end and Priya is 23th fro...
On which of the following floor number does D live?
 Some girls were sitting in a queue. Priya is sitting 14th from left end and Disha is 7th from right end. If there are 4 girls between Priya and Disha,...
There are five students S, T, U, V and W participating in a match. T gets lesser score than only U and S. V scores lesser than T and more than W. S does...
Ruchi ranks 7th from the top while Rohan ranks 20th from the bottom in an exam marks list. If there is one rank between Ruchi an...
Who among the following has more marks than H?
How many boxes are kept ahead of T?
In a queue, Amarjit is 10th from the front while Muskan is 25th from behind and Manjit is just in the middle of the two. If there be 50 persons in the q...