Question
The average weight of 30 students in a class is 60 kg.
When one student leaves and another joins, the average becomes 59.5 kg. The student who left had weight 72 kg. Find the weight of the new student.Solution
ATQ, Total weight of original 30 students = 30 × 60 = 1800 kg After change, total = 29 old + 1 new = 30 students, average 59.5 kg So new total weight = 30 × 59.5 = 1785 kg Weight of 29 remaining students = 1800 − 72 = 1728 kg Let new student’s weight = w. Then 1728 + w = 1785 w = 1785 − 1728 = 57 kg.
Find the appropriate word.
Find the appropriate word for 21.
From the following select the appropriate word to replace number (46) in the above passage.Â
Which of the following statements, best indicates the main idea that the author tries to convey through the passage ?
Select the most appropriate option to fill in blank number 3
Fill in blank 94 with the most appropriate word.
Find the appropriate word.
In the following passage, some words have been omitted and indicated by a number. Select the most appropriate word from the given options pertaining to...
Choose the most appropriate word for blank 109.
 Select the most appropriate option to fill in blank
Relevant for Exams:
