Hello there! Mrs. Rullo would have 24 more pens than Mrs. Virola.
Need an Explanation?:
Let's use a system of equations to solve.
(r = Mrs. Rullo, v = Mrs. Virola)
4v = r - Models that Mrs. Rullo has 4 times the pens of Mrs. Virola)
r + v = 40 - Models that they have a total of 40 pens.
Next place the first equation in the place of r in the second equation and solve.
(4v) + v = 40
Combine like terms.
5v = 40
Divide 5 from both sides to isolate v.
v = 8
This means Mrs. Virola has 8 pens. How many pens does Mrs. Rullo have? well, since they add up to 40, subtract Mr's Virola's amount from 40 to get the remaning number, or Mrs. Rullo's Amount.
40 - 8 = 32.
So this means that Mrs. Rullo has 32 pens.
But wait - the question is asking how many more pens Mrs. Rullo has than Mrs. Virola.
So, subtratct Mrs. Rullo's amount from Mrs. Virola's to find the difference.
32 - 8 = 24
So, she has 24 more pens.
I hope this helps, and have a great day! Please don't hesitate to ask if you need more help with this specific question!