N Scale Model Trains

Help with homework ?
can anyone help me with these? you don’t have to give me the answer (unless you want to) you can tell me how to solve them?
1) An 8 in. x 10 in. photo is reduced proportionally so that the larger dimension becomes 8 in. What is the new size o the smaller dimension?
2) The distance from New York City to Riverhead is approximately 150 miles. On a map whose scale is 24 miles = 2 inches, what is the distance between the two locations in inches
3) N Scale Model trains use a scale of 1 to 160 with the actual size.An actual train car 60 feet long will be how long in an N Scale model
It is fractions.
8/10= __/8
2/24=__/150
1/160=60/___
Use multiplication or division to figure out the blanks.
The last one maybe reversed.