the average of three number is 7 ,if one of these number is 3 ,find the average of other two numbers
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1
Answer:
let numbers be 13,a,b. average is (13+a+b)/3=7. 13+a+b=21. a+b=8. average of two numbers ia a+b/2.
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Answered by
0
Answer:
9
Step-by-step explanation:
we have three numbers who's average is 7, then all the numbers added are 21 because 7 X 3 = 21. If we have one number which is 3 then the other numbers' sum is 18 because 21 - 3 = 18. We know that there are 2 numbers and their sum is 18 so the average of the two numbers should be 9 because 18 ÷ 2 = 9.
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