If she is setting up a proportion to find the percent, the value of m would be any variable and the value of n would be 100. When she solves the problem, m=65%.
13/20 is part out of whole. The rest of the proportion will be "percent out of 100"; since we don't initially know the percent, we use a variable. Thus we have
13/20 = m/100
Cross multiply:
20*x = 13*100
20x = 1300
Divide both sides by 20:
20x/20 = 1300/20
x = 65
Answer:
360 km
Step-by-step explanation:
we know that
The scale of the map is
1:1,500,000
That means
1 cm on a map ------> represent 1.500.000 cm in the actual
or
1 cm on a map ------> represent 15,000 m in the actual
or
1 cm on a map ------> represent 15 km in the actual
therefore
In this problem
24 cm on a map-------> represent 24*15=360 km actually