Question

mean of the numbers 71, 78 , 75 , 80 , a , b is 80 . If a-b=10 , then find a and b​

Answer 1

Answer:

80 = (71+78+75+80+a+b) / 6

Now, a-b=10

So, a=b+10

Hence, 80 = (71+78+75+80+b+10+b) / 6

480 = 314 + 2b

2b = 480-314

2b = 166

b = 83

Hence, a-b=10

a-83=10

a = 10+83 = 93

Ans, a=93, b=83

Answer 2

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