Question
In a class of 30 students, the average height is 155 cm.
After one student leaves and five new students join, the class size becomes 34, and the new average height drops to 154.5 cm. Given that the total height of the five new students is 750 cm, determine the height of a student who is 2 cm taller than the student who left the school.Solution
ATQ,
Sum of height of class = 30 * 155 = 4650 4650 - x + 750 = 154.5 * 34 5400 -x = 5253 x = 147 Required height of the student = 147 + 2 = 149 cm
More ESIC Part B Questions
Who among the following lives between the floor on which Q and U lives?
Who lives to the immediate east of Swati?
How many persons are senior to ASHWANI?Â
Which of the following given pair is different from rest?
On which of the following days Vaani was born?
Find the odd one out.
- Seven boxes T, U, V, W, X, Y and Z are kept one above another such that bottommost box is numbered as 1 and topmost box is numbered as 7. At least four box...
Which of the following does not belong to the group?
Who lives on the floor immediately above T?
Who lives in flat 1 of the bottommost floor?
Relevant for Exams:
