Answer
21 aces
Work Step by Step
We use the word problem to set up the equation (Average=$\frac{aces} {numbergames}$ ) and fill our values accordingly.The average is 0.3 and the number of games is 70 so you have to find the number of aces.
0.3=$\frac{aces}{70}$
To solve this, you have to multiply both sides of the equation by 70 in order to isolate aces and solve the equation.
0.3$\times$70=ACES
Aces=21