Well, we know that there are 2 cities. The original map is having 1 inch represent 20 miles. The cities are 7 inches apart. First off, you need to know how far apart in MILES they are.
20*7=140, so the cities are 7 inches apart, or 140 miles.
So, you want to make an identical map, but you want your measurements to be a bit more spaced. we know YOUR map will have every 3 inches representing 35 miles, but we need to know how far apart in inches will 140 miles be. Well, we simply take 140 and divide it by 35 then! 140/35=4 Wait, your not done yet, The 4 only represents how many "35 mile" increments you need to get to 140. This means the number representing inches also has to be multiplied by this 4 to get your final answer. 3*4=12 This means on YOUR map, the 2 cities will be 12 inches apart.
7 X 20 is 140 so they're 140 miles apart in real life, if the scale is 3:35 then divide by 3 to make it 11.66667 then times 11.66667 by 140 I think to get the answer ;)
First you do 8 divided by 4 to equal the unit price of 1 pound of chicken for 2 dollars then you do 20 divided by 2 to equal 10 pounds of chicken for 20 dollars