Answer:
2/3 of the money, $42.50
Explanation:
The total Jason is saving is ...
$45.50 +18.25 = $63.75
If 1/3 was earned by mowing, the remaining 2/3 was earned by babysitting. Two thirds of the amount is ...
(2/3) × $63.75 = $42.50
Jason earned $42.50 by babysitting.