Verified answer

Answer:

mark as brainlist

Step-by-step explanation:

Mean =

Total number of values

Sum of all values

The arithmetic mean of given data =

3+A+6+10+5

(5×3)+(15×A)+(25×6)+(35×10)+(45×5)

=25

⇒

24+A

740+15A

=25

⇒740+15A=24×25+25A

⇒10A=740−600=140

⇒A=

10

140

=14

∴ the value of A is 14.