Well first round to the nearest whole then add then subtract then you will get your answer
First add all the numbers together to get the total number of marbles which would be 12 then make a fraction 3/12. Which can be simplified to 1/4 which if needed can be changed to a percentage of 25%. So your answer is either 1/4 or 25% depending on how your teacher would like it written.
Answer:
So she earned 148 dollars and 50 cents or 148.5
Step-by-step explanation:
25/19 = 1.31589474
.0131589474%