five numbers have an average of 62. the average of first two numbers is 59 and that of the last two numbers is 63. find the third number
Answers
Sum of all 5 nos.= 5×62=310
Sum of 1st 2 nos.=59×2=118
Sum of last 2 nos.=63×2=126
Sum of 1st 2 and last 2 nos.=118+126=244
3rd no.=Sum of 5 nos.-244=310-244=66.
Solve it yourself and check if my answer is correct.
Answer:
66
Step-by-step explanation:
Question: Five numbers have an average of 62. The average of first two numbers is 59 and that of the last two numbers is 63. Find the third number
To Find: The Third number
Given: The average of first two numbers is 59 and last two number is 63.The average of all five numbers is 62
Explanation:-
The average of first two numbers = 59
The average of last two numbers = 63
The average of all five numbers= 62
The sum of all 5 numbers = 62×5=310
The sum of first two numbers is= 59×2= 118
The sum of last two number is = 63×2= 126
Therefore the third number is:-
=(sum of all 5 numbers) -[(sum of first two numbers)+(sum of last two number)]
= 310 - [118+126]
= 310-244
= 66
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