Answer = 63
Explanation
You could set up a ratio of y1/y2 = x1/x2
In your case
3/21=9/x
3x=189
X=63
1.63 is the answer. :))))))
Answer:19.74 gallons of the gas in the tank is wasted.
Step-by-step explanation:
Since the efficiency of the gas engine is 6%, wastage is #= 100 - 6 = 94%.
Therefore wastage = 94% x 21=94 x21/100=19.74 gallons
