Answer:
No estoy seguro de preguntar a tus padres o profesor
Step-by-step explanation:
Answer:
15
Step-by-step explanation:
For Jim,
His story books were increased by 15% to 23, then his original number is 100% and the final number is 100% + 15% = 115%.
Use the formula: Whole = Part ÷ Percent
Jim's original number: 23 ÷ 115% = 20
Thus, the given number: 23 – 20 = 3
For Tom,
20% of his original number is 3.
Thus, Tom's original number: 3 ÷ 20% = 15
So the answer is 15.
