Question

- The mean of 10 numbers is 12.5. The mean of first
six is 15 and the last five is 10. Then the sixth
number is:
(a) 10
(b) 20
(d 25
(d) 15​

Answer 1

Answer:

15

Step-by-step explanation:

10*12.5=125

6*15=90

10*5=50

90+50=140

140-125=15