Question

The average of 7 numbers is 60. The average of the first three numbers is 50, while the average of the last

three is 70. What must be the remaining number?

Answer 1

Sum of seven numbers=60*7=420
Sum of first three=50*3=150
Sum of last three=70*3=210
Remaining Number=420-(210+150)
                               =420-360
                               =60

Brainliest Please

Answer 2

Concept Introduction:

Data are summed up to determine the number of units in a list and then divided by that number.

Given: The average of $7$ numbers is $60$. The average of the first three numbers is $50$, while the average of the last three is $70$.

To Find: We have to find the remaining number.

Solution: The sum of all the seven numbers = $60 * 7 = 420$.

The sum of the first three = $50 * 3 = 150.$

The sum of the last three =$70 * 3 = 210$.

Remaining Number = $70 * 3 = 210$

Final Answer: The remaining number must be $60.$

#SPJ2