In a class,the average height of 35 girls was | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) The initial total height of $35$ girls is calculated as: $35 	imes 160 = 5600 \,cm$.To find the actual total height,subtract the incorrect value

Vedclass · Accepted Answer

$158.85$

Vedclass · Answer

(D) The initial total height of $35$ girls is calculated as: $35 	imes 160 = 5600 \,cm$.To find the actual total height,subtract the incorrect value and add the correct value: $5600 - 144 + 104 = 5560 \,cm$.Now,calculate the actual average height by dividing the actual total height by the number of girls: $\frac{5560}{35} \approx 158.8571... \,cm$.Rounding off to two decimal places,we get $158.86 \,cm$. (Note: Based on the provided options,the closest value is $158.85$ or $158.86$. Re-calculating $5560/35 = 158.857$,which rounds to $158.86$. Given the options,$158.86$ is the mathematically correct rounded value,but $158.85$ is provided as option $D$).

Similar Questions

The average age of $20$ boys in the class is $15.6$ years. Five new boys join and the new average becomes $15.56$ years. What is the average age of the five new boys (in years)?

What is the average of first $7$ multiples of $7$?

The average salary per head of all the workers in a workshop is $Rs. 850$. If the average salary per head of $7$ technicians is $Rs. 1000$ and the average salary per head of the rest is $Rs. 780$,find out the total number of workers in the workshop.

The average of $20$ numbers is $30$ and that of other $30$ numbers is $50$. What is the average of all the numbers?

The mean of $19$ observations is $4$. If one more observation of $24$ is added to the data,the new mean will be

Vedclass Test Series

Exam Paper Generator

Online Exam Module