administrators Reply Quote

Answer : 3 25 Explanation : Answer: C) 25 Explanation: a b=5   ...(1)    and    3a 2b=20 ...(2) Multiplying (1) by 2 and subtracting from (2), we get : a=10. Putting a=10 in (1), we get : b=-5 Therefore,   (3a b) = 3 x 10 (-5)=30-5=25.

Click here to see the full blog post