Try and use socratic it will show the answer
For this problem, you know that the first walker will arrive 2 hours before the second, and increases his speed by 2 times the second walker. You also know there is a distance of 24 km. So up until some time x, the two walkers have to be going the same speed. If the first walker increases speed by two times the speed per hour, and arrives two hours earlier, then his initial speed will be 20 km/h, because after 2 hours, he will have an increase of 4 km/hr, and the second will have an increase of 2 km/h, thereby making the first arrive 2 hours earlier, if that makes sense.
<span>Assuming you are using the rule that housing shouldn't exceed 30% of income and that the mortgage payment includes taxes and insurance costs you want to take the following steps to determine the answer.
1248.90/x = 30/100
124,890/x = 30
124,890 = 30x
4,163 = x
$4,163/mo is the minimum amount you want in income per month to keep your housing expense in the acceptable range.</span>
