Michelle has visit 30 like houses in virginia and maryland 20% of the light houses are in virginia how many more light houses did she visit in maryland than in virginia

 Michelle visited 24 more lighthouses in Maryland than in Virginia.

Step-by-step explanation:

Based on the information given in the exercise, you know that Michelle visited a total of 30 lighthhouses.

You can express the percent in decimal form by dividing it by 100. Then:

Let be "V" the number of lighthouses Michelle visited in Virginia. Since it is the 20% of the 30 lighthouses, this is:

Let be "M" the number of lighthouses Michelle visited in Maryland (). This is:

Therefore, you can determine that Michelle visited 24 more lighthouses in Maryland than in Virginia.