20x - y = 240000 from -3x + 20y = 20000
Answers
Answered by
1
Answer:
20x + 20y = 70. Taking common, 20( x+y) =70 x+y =70/20 x+y = 7/2 = 3.5. Now, As we know that. Average =(sum of quantity)/( no. of quantity )
Step-by-step explanation:
Hope it will help you
Similar questions