Question

If the mean of 7, 8, a, 10, b, 16 is 11, then : (a)a+b=15 (b)a-b=25
(c)a+b=25 (d)a-b=15
please step by step explain kar dijiye
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Answer 1

Step-by-step explanation:

Mean of 7, 8, a,10,b,16 is 11

1. 7+8+a+10+b+16/6=11
2. 36+a+b/6=11
3. 36+a+b=11×6
4. 36+a+b=66
5. a+b=66-36
6. a+b=30