The average is 4 numbers is 20.if A and B added to the sum of these numbers, the average become 30.find A+B.
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Answer:
A + B = 100
Step-by-step explanation:
Average of 4 Numbers = 20
Sum of 4 numbers = 20 * 4
Now, 2 numbers are added. (A , B)
Total Numbers = 6
Average = 30
Sum of numbers = 30*6 = sum of 4 numbers + A + B
⇒ 180 = 80 + A + B
⇒ A + B = 180 - 80
⇒ A + B = 100
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